diff --git a/.coveragerc b/.coveragerc
index c890c53f..adb924a7 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -8,3 +8,7 @@ omit =
     *admin.py
     *static*
     *templates*
+[report]
+exclude_lines =
+    pragma: no cover
+    raise NotImplementedError
diff --git a/Makefile b/Makefile
index 0e49b534..6655b8ad 100644
--- a/Makefile
+++ b/Makefile
@@ -12,14 +12,15 @@ help: ## display this help message
 	@awk -F ':.*?## ' '/^[a-zA-Z]/ && NF==2 {printf "\033[36m  %-25s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST) | sort
 
 clean: ## remove generated byte code, coverage reports, and build artifacts
-	find . -name '__pycache__' -exec rm -rf {} +
-	find . -name '*.pyc' -exec rm -f {} +
-	find . -name '*.pyo' -exec rm -f {} +
-	find . -name '*~' -exec rm -f {} +
 	coverage erase
 	rm -fr build/
 	rm -fr dist/
 	rm -fr *.egg-info
+	rm -rf test_output/*.json
+	find . -name '__pycache__' -exec rm -rf {} +
+	find . -name '*.pyc' -exec rm -f {} +
+	find . -name '*.pyo' -exec rm -f {} +
+	find . -name '*~' -exec rm -f {} +
 
 coverage: clean ## generate and view HTML coverage report
 	pytest --cov-report html
diff --git a/event_routing_backends/__init__.py b/event_routing_backends/__init__.py
index 76a6b185..abb7ae37 100644
--- a/event_routing_backends/__init__.py
+++ b/event_routing_backends/__init__.py
@@ -2,4 +2,4 @@
 Various backends for receiving edX LMS events..
 """
 
-__version__ = '6.2.0'
+__version__ = '7.0.0'
diff --git a/event_routing_backends/backends/events_router.py b/event_routing_backends/backends/events_router.py
index 1e12a33b..8a8b774f 100644
--- a/event_routing_backends/backends/events_router.py
+++ b/event_routing_backends/backends/events_router.py
@@ -79,7 +79,7 @@ def prepare_to_send(self, events):
                     'Processing edx event "{}" for router with backend {}'.format(event_name, self.backend_name)
                 )
 
-                processed_event = self.process_event(event)
+                processed_events = self.process_event(event)
             except (EventEmissionExit, ValueError):
                 logger.error(
                     'Could not process edx event "%s" for backend %s\'s router',
@@ -90,10 +90,10 @@ def prepare_to_send(self, events):
                 continue
 
             logger.debug(
-                'Successfully processed edx event "%s" for router with backend %s. Processed event: %s',
+                'Successfully processed edx event "%s" for router with backend %s. Processed events: %s',
                 event_name,
                 self.backend_name,
-                processed_event
+                processed_events
             )
 
             for router in routers:
@@ -107,11 +107,13 @@ def prepare_to_send(self, events):
                     )
                 else:
                     host = self.configure_host(host, router)
-                    updated_event = self.overwrite_event_data(processed_event, host, event_name)
-                    is_business_critical = event_name in business_critical_events
-                    if router_pk not in route_events:
-                        route_events[router_pk] = [(event_name, updated_event, host, is_business_critical),]
-                    else:
+
+                    if processed_events and router_pk not in route_events:
+                        route_events[router_pk] = []
+
+                    for processed_event in processed_events:
+                        updated_event = self.overwrite_event_data(processed_event, host, event_name)
+                        is_business_critical = event_name in business_critical_events
                         route_events[router_pk].append((event_name, updated_event, host, is_business_critical))
 
         return route_events
@@ -176,17 +178,19 @@ def process_event(self, event):
         """
         Process the event through this router's processors.
 
+        This single event may produce multiple processed events, and so we return a list of events here.
+
         Arguments:
             event (dict):      Event to be processed
 
         Returns
-            dict
+            list of ANY
         """
-        event = event.copy()
+        events = [event.copy()]
         for processor in self.processors:
-            event = processor(event)
+            events = processor(events)
 
-        return event
+        return events
 
     def overwrite_event_data(self, event, host, event_name):
         """
diff --git a/event_routing_backends/backends/tests/test_events_router.py b/event_routing_backends/backends/tests/test_events_router.py
index b4d8bfa6..a8bc1ccc 100644
--- a/event_routing_backends/backends/tests/test_events_router.py
+++ b/event_routing_backends/backends/tests/test_events_router.py
@@ -153,9 +153,9 @@ def setUp(self):
     @patch('event_routing_backends.models.RouterConfiguration.get_enabled_routers')
     def test_with_processor_exception(self, mocked_get_enabled_routers, mocked_logger, mocked_post):
         processors = [
-            MagicMock(return_value=self.transformed_event),
-            MagicMock(side_effect=EventEmissionExit, return_value=self.transformed_event),
-            MagicMock(return_value=self.transformed_event),
+            MagicMock(return_value=[self.transformed_event]),
+            MagicMock(side_effect=EventEmissionExit, return_value=[self.transformed_event]),
+            MagicMock(return_value=[self.transformed_event]),
         ]
         processors[1].side_effect = EventEmissionExit
 
@@ -164,8 +164,8 @@ def test_with_processor_exception(self, mocked_get_enabled_routers, mocked_logge
         router = EventsRouter(processors=processors, backend_name='test')
         router.send(self.transformed_event)
 
-        processors[0].assert_called_once_with(self.transformed_event)
-        processors[1].assert_called_once_with(self.transformed_event)
+        processors[0].assert_called_once_with([self.transformed_event])
+        processors[1].assert_called_once_with([self.transformed_event])
         processors[2].assert_not_called()
 
         mocked_post.assert_not_called()
@@ -642,7 +642,14 @@ def test_duplicate_xapi_event_id(self, mocked_logger):
             mocked_logger.info.mock_calls
         )
 
-    def test_unsuccessful_routing_of_event_http(self):
+    @patch('event_routing_backends.utils.http_client.requests.post')
+    def test_unsuccessful_routing_of_event_http(self, mocked_post):
+        mock_response = MagicMock()
+        mock_response.status_code = 500
+        mock_response.request.method = "POST"
+        mock_response.text = "Fake Server Error"
+        mocked_post.return_value = mock_response
+
         host_configurations = {
                         'url': 'http://test4.com',
                         'auth_scheme': 'bearer',
diff --git a/event_routing_backends/processors/caliper/envelope_processor.py b/event_routing_backends/processors/caliper/envelope_processor.py
index 27f5d59d..4d1f2819 100644
--- a/event_routing_backends/processors/caliper/envelope_processor.py
+++ b/event_routing_backends/processors/caliper/envelope_processor.py
@@ -19,19 +19,22 @@ def __init__(self, sensor_id):
         """
         self.sensor_id = sensor_id
 
-    def __call__(self, event):
+    def __call__(self, events):
         """
-        Envelope the caliper transformed event.
+        Envelope the caliper transformed events.
 
         Arguments:
-            event (dict):   IMS Caliper compliant event dict
+            events (list of dicts):   List of IMS Caliper compliant event dicts
 
         Returns:
-            dict
+            list of dicts
         """
-        return {
-            'sensor': self.sensor_id,
-            'sendTime': convert_datetime_to_iso(datetime.now(UTC)),
-            'data': [event],
-            'dataVersion': CALIPER_EVENT_CONTEXT
-        }
+        enveloped_events = []
+        for event in events:
+            enveloped_events.append({
+                'sensor': self.sensor_id,
+                'sendTime': convert_datetime_to_iso(datetime.now(UTC)),
+                'data': [event],
+                'dataVersion': CALIPER_EVENT_CONTEXT
+            })
+        return enveloped_events
diff --git a/event_routing_backends/processors/caliper/event_transformers/enrollment_events.py b/event_routing_backends/processors/caliper/event_transformers/enrollment_events.py
index dfdda372..74c27a55 100644
--- a/event_routing_backends/processors/caliper/event_transformers/enrollment_events.py
+++ b/event_routing_backends/processors/caliper/event_transformers/enrollment_events.py
@@ -50,10 +50,11 @@ def get_object(self):
 
         # TODO: replace with anonymous enrollment id?
         course_root_url = self.get_object_iri('course', self.get_data('data.course_id', True))
-        caliper_object = {
+        caliper_object = super().get_object()
+        caliper_object.update({
             'id': course_root_url,
             'type': 'CourseOffering',
             'name': course['display_name'],
             'extensions': {'mode': self.get_data('data.mode')} if self.get_data('data.mode') is not None else None,
-        }
+        })
         return caliper_object
diff --git a/event_routing_backends/processors/caliper/event_transformers/navigation_events.py b/event_routing_backends/processors/caliper/event_transformers/navigation_events.py
index 8c322ecc..50171dc8 100644
--- a/event_routing_backends/processors/caliper/event_transformers/navigation_events.py
+++ b/event_routing_backends/processors/caliper/event_transformers/navigation_events.py
@@ -39,7 +39,7 @@ def get_object(self):
             dict
         """
         self.backend_name = 'caliper'
-        caliper_object = self.transformed_event['object']
+        caliper_object = super().get_object()
 
         data = self.get_data('data')
         extensions = {}
diff --git a/event_routing_backends/processors/caliper/event_transformers/problem_interaction_events.py b/event_routing_backends/processors/caliper/event_transformers/problem_interaction_events.py
index 38f0b36d..23e007f5 100644
--- a/event_routing_backends/processors/caliper/event_transformers/problem_interaction_events.py
+++ b/event_routing_backends/processors/caliper/event_transformers/problem_interaction_events.py
@@ -149,7 +149,7 @@ def get_object(self):
         else:
             iri_url = object_id
 
-        caliper_object = self.transformed_event['object']
+        caliper_object = super().get_object()
         caliper_object.update({
             'id': self.get_object_iri('xblock', iri_url),
             'type': OBJECT_TYPE_MAP.get(key, 'Attempt'),
diff --git a/event_routing_backends/processors/caliper/event_transformers/video_events.py b/event_routing_backends/processors/caliper/event_transformers/video_events.py
index d202a348..87bc3516 100644
--- a/event_routing_backends/processors/caliper/event_transformers/video_events.py
+++ b/event_routing_backends/processors/caliper/event_transformers/video_events.py
@@ -82,7 +82,7 @@ def get_object(self):
             dict
         """
         self.backend_name = 'caliper'
-        caliper_object = self.transformed_event['object']
+        caliper_object = super().get_object()
         data = self.get_data('data')
         course_id = self.get_data('context.course_id', True)
         video_id = self.get_data('data.id', True)
@@ -176,10 +176,12 @@ class VideoSpeedChangedTransformer(BaseVideoTransformer):
     """
     Transform the event fired when a video's speed is changed.
     """
-    additional_fields = ('target', 'extensions',)
+    additional_fields = ('target',)
 
     def get_extensions(self):
-        return {
+        extensions = super().get_extensions()
+        extensions.update({
             'oldSpeed': self.get_data('old_speed'),
             'newSpeed': self.get_data('new_speed'),
-        }
+        })
+        return extensions
diff --git a/event_routing_backends/processors/caliper/tests/test_caliper.py b/event_routing_backends/processors/caliper/tests/test_caliper.py
index 3857da23..a18bcddf 100644
--- a/event_routing_backends/processors/caliper/tests/test_caliper.py
+++ b/event_routing_backends/processors/caliper/tests/test_caliper.py
@@ -35,7 +35,7 @@ def test_skip_event_when_disabled(self):
     @patch('event_routing_backends.processors.mixins.base_transformer_processor.logger')
     def test_send_method_with_no_transformer_implemented(self, mocked_logger):
         with self.assertRaises(EventEmissionExit):
-            self.processor(self.sample_event)
+            self.processor([self.sample_event])
 
         mocked_logger.error.assert_called_once_with(
             'Could not get transformer for %s event.',
@@ -49,7 +49,7 @@ def test_send_method_with_no_transformer_implemented(self, mocked_logger):
     @patch('event_routing_backends.processors.mixins.base_transformer_processor.logger')
     def test_send_method_with_unknown_exception(self, mocked_logger, _):
         with self.assertRaises(ValueError):
-            self.processor(self.sample_event)
+            self.processor([self.sample_event])
 
         mocked_logger.exception.assert_called_once_with(
             'There was an error while trying to transform event "sentinel.name" using CaliperProcessor'
@@ -73,7 +73,7 @@ def test_send_method_with_successfull_flow(
         mocked_transformer.transform.return_value = transformed_event
         mocked_get_transformer.return_value = mocked_transformer
 
-        self.processor(self.sample_event)
+        self.processor([self.sample_event])
 
         self.assertIn(
             call(
@@ -109,7 +109,7 @@ def test_send_method_with_successfull_flow_logging_disabled(
         mocked_transformer.transform.return_value = transformed_event
         mocked_get_transformer.return_value = mocked_transformer
 
-        self.processor(self.sample_event)
+        self.processor([self.sample_event])
 
         self.assertIn(
             call(
@@ -131,5 +131,5 @@ def test_with_no_registry(self, mocked_logger):
         backend = CaliperProcessor()
         backend.registry = None
         with self.assertRaises(EventEmissionExit):
-            self.assertIsNone(backend(self.sample_event))
+            self.assertIsNone(backend([self.sample_event]))
         mocked_logger.exception.assert_called_once()
diff --git a/event_routing_backends/processors/caliper/tests/test_envelope_processor.py b/event_routing_backends/processors/caliper/tests/test_envelope_processor.py
index fe19abcf..9876b80f 100644
--- a/event_routing_backends/processors/caliper/tests/test_envelope_processor.py
+++ b/event_routing_backends/processors/caliper/tests/test_envelope_processor.py
@@ -30,10 +30,10 @@ def setUp(self):
     def test_caliper_envelope_processor(self, mocked_datetime):
         mocked_datetime.now.return_value = FROZEN_TIME
 
-        result = CaliperEnvelopeProcessor(sensor_id=self.sensor_id)(self.sample_event)
-        self.assertEqual(result, {
+        result = CaliperEnvelopeProcessor(sensor_id=self.sensor_id)([self.sample_event])
+        self.assertEqual(result, [{
             'sensor': self.sensor_id,
             'sendTime': convert_datetime_to_iso(str(FROZEN_TIME)),
             'data': [self.sample_event],
             'dataVersion': CALIPER_EVENT_CONTEXT
-        })
+        }])
diff --git a/event_routing_backends/processors/caliper/transformer.py b/event_routing_backends/processors/caliper/transformer.py
index 0ec532eb..0f7e9496 100644
--- a/event_routing_backends/processors/caliper/transformer.py
+++ b/event_routing_backends/processors/caliper/transformer.py
@@ -19,41 +19,35 @@ class CaliperTransformer(BaseTransformerMixin):
     required_fields = (
         'type',
         'object',
-        'action'
+        'action',
+        'extensions',
     )
 
-    def base_transform(self):
+    def base_transform(self, transformed_event):
         """
         Transform common Caliper fields.
         """
-        self._add_generic_fields()
-        self._add_actor_info()
-        self._add_session_info()
+        transformed_event = super().base_transform(transformed_event)
+        self._add_generic_fields(transformed_event)
+        self._add_actor_info(transformed_event)
+        self._add_session_info(transformed_event)
+        return transformed_event
 
-    def _add_generic_fields(self):
+    def _add_generic_fields(self, transformed_event):
         """
         Add all of the generic fields to the transformed_event object.
         """
-        self.transformed_event.update({
+        transformed_event.update({
             '@context': CALIPER_EVENT_CONTEXT,
             'id': uuid.uuid4().urn,
             'eventTime': convert_datetime_to_iso(self.get_data('timestamp', True)),
-            'extensions': {}
         })
-        self.transformed_event['object'] = {}
-        course_id = self.get_data('context.course_id')
-        if course_id is not None:
-            extensions = {"isPartOf": {}}
-            extensions['isPartOf']['id'] = self.get_object_iri('course', course_id)
-            extensions['isPartOf']['type'] = 'CourseOffering'
-            self.transformed_event['object']['extensions'] = {}
-            self.transformed_event['object']['extensions'].update(extensions)
 
-    def _add_actor_info(self):
+    def _add_actor_info(self, transformed_event):
         """
-        Add all generic information related to `actor`.
+        Add all generic information related to `actor` to the transformed_event.
         """
-        self.transformed_event['actor'] = {
+        transformed_event['actor'] = {
             'id': self.get_object_iri(
                 'user',
                 get_anonymous_user_id(self.extract_username_or_userid(), 'CALIPER'),
@@ -61,16 +55,45 @@ def _add_actor_info(self):
             'type': 'Person'
         }
 
-    def _add_session_info(self):
+    def _add_session_info(self, transformed_event):
         """
-        Add session info related to the event
+        Add session info related to the transformed_event.
         """
         sessionid = self.extract_sessionid()
         if sessionid:
-            self.transformed_event['session'] = {
+            transformed_event['session'] = {
                 'id': self.get_object_iri(
                     'sessions',
                     sessionid,
                 ),
                 'type': 'Session'
             }
+
+    def get_object(self):
+        """
+        Return object for the event.
+
+        Returns:
+            dict
+        """
+        caliper_object = super().get_object()
+        course_id = self.get_data('context.course_id')
+        if course_id is not None:
+            extensions = {"isPartOf": {}}
+            extensions['isPartOf']['id'] = self.get_object_iri('course', course_id)
+            extensions['isPartOf']['type'] = 'CourseOffering'
+            caliper_object['extensions'] = {}
+            caliper_object['extensions'].update(extensions)
+
+        return caliper_object
+
+    def get_extensions(self):
+        """
+        Return extensions for the event.
+
+        Returns:
+            dict
+        """
+        return {
+            'transformerVersion': self.transformer_version,
+        }
diff --git a/event_routing_backends/processors/mixins/base_transformer.py b/event_routing_backends/processors/mixins/base_transformer.py
index 78cf8398..a4c78743 100644
--- a/event_routing_backends/processors/mixins/base_transformer.py
+++ b/event_routing_backends/processors/mixins/base_transformer.py
@@ -30,7 +30,6 @@ def __init__(self, event):
             event (dict)    :   event to be transformed
         """
         self.event = event.copy()
-        self.transformed_event = {}
 
     @staticmethod
     def find_nested(source_dict, key):
@@ -65,14 +64,17 @@ def _find_nested(event_dict):
 
         return _find_nested(source_dict)
 
-    def base_transform(self):
+    def base_transform(self, transformed_event):
         """
         Transform the fields that are common for all events.
 
         Other classes can override this method to add common transformation
         code for events.
+
+        Returns:
+            ANY
         """
-        return
+        return transformed_event or {}
 
     @property
     def transformer_version(self):
@@ -92,18 +94,18 @@ def transform(self):
         Transform the edX event.
 
         Returns:
-            dict
+            ANY
         """
-        self.base_transform()
+        transformed_event = self.base_transform({})
 
         transforming_fields = self.required_fields + self.additional_fields
         for key in transforming_fields:
             if hasattr(self, key):
                 value = getattr(self, key)
-                self.transformed_event[key] = value
+                transformed_event[key] = value
             elif hasattr(self, f'get_{key}'):
                 value = getattr(self, f'get_{key}')()
-                self.transformed_event[key] = value
+                transformed_event[key] = value
             else:
                 raise ValueError(
                     'Cannot find value for "{}" in transformer {} for the edx event "{}"'.format(
@@ -111,12 +113,9 @@ def transform(self):
                     )
                 )
 
-        if self.backend_name == 'caliper':
-            self.transformed_event['extensions']['transformerVersion'] = self.transformer_version
-
-        self.transformed_event = self.del_none(self.transformed_event)
+        transformed_event = self.del_none(transformed_event)
 
-        return self.transformed_event
+        return transformed_event
 
     def extract_username_or_userid(self):
         """
@@ -218,3 +217,12 @@ def get_object_iri(self, object_type, object_id):
             object_type=object_type,
             object_id=object_id
         )
+
+    def get_object(self):
+        """
+        Return object for the event.
+
+        Returns:
+            dict
+        """
+        return {}
diff --git a/event_routing_backends/processors/mixins/base_transformer_processor.py b/event_routing_backends/processors/mixins/base_transformer_processor.py
index f1d2110f..fa558771 100644
--- a/event_routing_backends/processors/mixins/base_transformer_processor.py
+++ b/event_routing_backends/processors/mixins/base_transformer_processor.py
@@ -18,33 +18,37 @@ class BaseTransformerProcessorMixin:
 
     registry = None
 
-    def __call__(self, event):
+    def __call__(self, events):
         """
-        Transform and then route the event to the configured routers.
+        Transform the given events, and return the transformed events.
 
         Arguments:
-            event (dict):   Event to be transformed and delivered.
+            event (list of dicts):   Events to be transformed.
 
         Returns:
-            transformed event (dict)
+            transformed events (list of ANY)
 
         Raises:
             EventEmissionExit except.on:  if no transformer is registered for an event.
             ANY exception: if raised.
         """
-        transformed_event = self.transform_event(event)
-
-        if transformed_event:
-            return transformed_event
-
-        raise EventEmissionExit
+        returned_events = []
+        for event in events:
+            transformed_event = self.transform_event(event)
+            if not transformed_event:
+                raise EventEmissionExit
+            if isinstance(transformed_event, list):
+                returned_events += transformed_event
+            else:
+                returned_events.append(transformed_event)
+        return returned_events
 
     def transform_event(self, event):
         """
         Transform the event.
 
-        Transformer method can return transformed event in any data structure format
-        (dict or any custom class) but the configured router(s) MUST support it.
+        Transformer method can return transformed events in any data structure format
+        (dict, list, or any custom class) but the configured router(s) MUST support it.
 
         Arguments:
             event (dict):   Event to be transformed.
diff --git a/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,correct).json b/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,correct).json
new file mode 100644
index 00000000..d6f92dfb
--- /dev/null
+++ b/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,correct).json
@@ -0,0 +1,160 @@
+{
+   "name":"problem_check",
+   "context":{
+      "course_id":"course-v1:edX+DemoX+Demo_Course",
+      "course_user_tags":{
+         
+      },
+      "user_id":8,
+      "path":"/courses/course-v1:edX+DemoX+Demo_Course/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4/handler/xmodule_handler/problem_check",
+      "org_id":"edX",
+      "enterprise_uuid":"",
+      "module":{
+         "display_name":"Multiple Choice Questions",
+         "usage_key":"block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4"
+      },
+      "asides":{
+         
+      }
+   },
+   "username":"staff",
+   "session":"97662bef7c463c187b8fd91e0f580468",
+   "ip":"172.18.0.1",
+   "agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0",
+   "host":"localhost:18000",
+   "referer":"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@vertical+block@54bb9b142c6c4c22afc62bcb628f0e68?exam_access=&format=Homework&recheck_access=1&show_bookmark=0&show_title=0&view=student_view",
+   "accept_language":"en-US,en;q=0.5",
+   "event":{
+      "state":{
+         "seed":1,
+         "student_answers":{
+            "a0effb954cca4759994f1ac9e9434bf4_2_1":"blue",
+            "a0effb954cca4759994f1ac9e9434bf4_4_1":[
+               "choice_0",
+               "choice_2"
+            ],
+            "a0effb954cca4759994f1ac9e9434bf4_3_1":"choice_3"
+         },
+         "has_saved_answers":false,
+         "correct_map":{
+            "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+               "correctness":"correct",
+               "npoints":null,
+               "msg":"",
+               "hint":"",
+               "hintmode":null,
+               "queuestate":null,
+               "answervariable":null
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+               "correctness":"incorrect",
+               "npoints":null,
+               "msg":"",
+               "hint":"",
+               "hintmode":null,
+               "queuestate":null,
+               "answervariable":null
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+               "correctness":"correct",
+               "npoints":null,
+               "msg":"",
+               "hint":"",
+               "hintmode":null,
+               "queuestate":null,
+               "answervariable":null
+            }
+         },
+         "input_state":{
+            "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+               
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+               
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+               
+            }
+         },
+         "done":true
+      },
+      "problem_id":"block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+      "answers":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":"blue",
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":[
+            "choice_0",
+            "choice_2"
+         ],
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":"choice_2"
+      },
+      "grade":3,
+      "max_grade":3,
+      "correct_map":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+            "correctness":"correct",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+            "correctness":"correct",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+            "correctness":"correct",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         }
+      },
+      "success":"correct",
+      "attempts":3,
+      "submission":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+            "question":"What color is the open ocean on a sunny day?",
+            "answer":"blue",
+            "response_type":"optionresponse",
+            "input_type":"optioninput",
+            "correct":true,
+            "variant":"",
+            "group_label":""
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+            "question":"Which of the following are musical instruments?",
+            "answer":[
+               "a piano",
+               "a guitar"
+            ],
+            "response_type":"choiceresponse",
+            "input_type":"checkboxgroup",
+            "correct":true,
+            "variant":"",
+            "group_label":""
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+            "question":"Which piece of furniture is built for sitting?",
+            "answer":"a chair",
+            "response_type":"multiplechoiceresponse",
+            "input_type":"choicegroup",
+            "correct":true,
+            "variant":"",
+            "group_label":""
+         }
+      }
+   },
+   "time":"2023-08-03T06:32:31.431355+00:00",
+   "event_type":"problem_check",
+   "event_source":"server",
+   "page":"x_module"
+}
diff --git a/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,incorrect).json b/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,incorrect).json
new file mode 100644
index 00000000..2552a1e8
--- /dev/null
+++ b/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,incorrect).json
@@ -0,0 +1,127 @@
+{
+   "name":"problem_check",
+   "context":{
+      "course_id":"course-v1:edX+DemoX+Demo_Course",
+      "course_user_tags":{
+         
+      },
+      "user_id":8,
+      "path":"/courses/course-v1:edX+DemoX+Demo_Course/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4/handler/xmodule_handler/problem_check",
+      "org_id":"edX",
+      "enterprise_uuid":"",
+      "module":{
+         "display_name":"Multiple Choice Questions",
+         "usage_key":"block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4"
+      },
+      "asides":{
+         
+      }
+   },
+   "username":"staff",
+   "session":"97662bef7c463c187b8fd91e0f580468",
+   "ip":"172.18.0.1",
+   "agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0",
+   "host":"localhost:18000",
+   "referer":"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@vertical+block@54bb9b142c6c4c22afc62bcb628f0e68?exam_access=&format=Homework&recheck_access=1&show_bookmark=0&show_title=0&view=student_view",
+   "accept_language":"en-US,en;q=0.5",
+   "event":{
+      "state":{
+         "seed":1,
+         "student_answers":{
+            
+         },
+         "has_saved_answers":false,
+         "correct_map":{
+            
+         },
+         "input_state":{
+            "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+               
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+               
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+               
+            }
+         },
+         "done":false
+      },
+      "problem_id":"block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+      "answers":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":"yellow",
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":[
+            "choice_3"
+         ],
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":"choice_3"
+      },
+      "grade":0,
+      "max_grade":3,
+      "correct_map":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+            "correctness":"incorrect",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+            "correctness":"incorrect",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+            "correctness":"incorrect",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         }
+      },
+      "success":"incorrect",
+      "attempts":1,
+      "submission":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+            "question":"What color is the open ocean on a sunny day?",
+            "answer":"yellow",
+            "response_type":"optionresponse",
+            "input_type":"optioninput",
+            "correct":false,
+            "variant":"",
+            "group_label":""
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+            "question":"Which of the following are musical instruments?",
+            "answer":[
+               "a window"
+            ],
+            "response_type":"choiceresponse",
+            "input_type":"checkboxgroup",
+            "correct":false,
+            "variant":"",
+            "group_label":""
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+            "question":"Which piece of furniture is built for sitting?",
+            "answer":"a bookshelf",
+            "response_type":"multiplechoiceresponse",
+            "input_type":"choicegroup",
+            "correct":false,
+            "variant":"",
+            "group_label":""
+         }
+      }
+   },
+   "time":"2023-08-03T06:30:32.026903+00:00",
+   "event_type":"problem_check",
+   "event_source":"server",
+   "page":"x_module"
+}
diff --git a/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,partial_correct).json b/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,partial_correct).json
new file mode 100644
index 00000000..341eae8a
--- /dev/null
+++ b/event_routing_backends/processors/tests/fixtures/current/problem_check(server,multiple_questions,partial_correct).json
@@ -0,0 +1,159 @@
+{
+   "name":"problem_check",
+   "context":{
+      "course_id":"course-v1:edX+DemoX+Demo_Course",
+      "course_user_tags":{
+         
+      },
+      "user_id":8,
+      "path":"/courses/course-v1:edX+DemoX+Demo_Course/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4/handler/xmodule_handler/problem_check",
+      "org_id":"edX",
+      "enterprise_uuid":"",
+      "module":{
+         "display_name":"Multiple Choice Questions",
+         "usage_key":"block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4"
+      },
+      "asides":{
+         
+      }
+   },
+   "username":"staff",
+   "session":"2c65c4e9e6a637feb42426fd35b5dac3",
+   "ip":"172.18.0.1",
+   "agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0",
+   "host":"localhost:18000",
+   "referer":"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@vertical+block@54bb9b142c6c4c22afc62bcb628f0e68?exam_access=&format=Homework&recheck_access=1&show_bookmark=0&show_title=0&view=student_view",
+   "accept_language":"en-US,en;q=0.5",
+   "event":{
+      "state":{
+         "seed":1,
+         "student_answers":{
+            "a0effb954cca4759994f1ac9e9434bf4_2_1":"yellow",
+            "a0effb954cca4759994f1ac9e9434bf4_4_1":[
+               "choice_3"
+            ],
+            "a0effb954cca4759994f1ac9e9434bf4_3_1":"choice_3"
+         },
+         "has_saved_answers":false,
+         "correct_map":{
+            "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+               "correctness":"incorrect",
+               "npoints":null,
+               "msg":"",
+               "hint":"",
+               "hintmode":null,
+               "queuestate":null,
+               "answervariable":null
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+               "correctness":"incorrect",
+               "npoints":null,
+               "msg":"",
+               "hint":"",
+               "hintmode":null,
+               "queuestate":null,
+               "answervariable":null
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+               "correctness":"incorrect",
+               "npoints":null,
+               "msg":"",
+               "hint":"",
+               "hintmode":null,
+               "queuestate":null,
+               "answervariable":null
+            }
+         },
+         "input_state":{
+            "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+               
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+               
+            },
+            "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+               
+            }
+         },
+         "done":true
+      },
+      "problem_id":"block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+      "answers":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":"blue",
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":[
+            "choice_0",
+            "choice_2"
+         ],
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":"choice_3"
+      },
+      "grade":2,
+      "max_grade":3,
+      "correct_map":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+            "correctness":"correct",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+            "correctness":"incorrect",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+            "correctness":"correct",
+            "npoints":null,
+            "msg":"",
+            "hint":"",
+            "hintmode":null,
+            "queuestate":null,
+            "answervariable":null
+         }
+      },
+      "success":"incorrect",
+      "attempts":2,
+      "submission":{
+         "a0effb954cca4759994f1ac9e9434bf4_2_1":{
+            "question":"What color is the open ocean on a sunny day?",
+            "answer":"blue",
+            "response_type":"optionresponse",
+            "input_type":"optioninput",
+            "correct":true,
+            "variant":"",
+            "group_label":""
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_4_1":{
+            "question":"Which of the following are musical instruments?",
+            "answer":[
+               "a piano",
+               "a guitar"
+            ],
+            "response_type":"choiceresponse",
+            "input_type":"checkboxgroup",
+            "correct":true,
+            "variant":"",
+            "group_label":""
+         },
+         "a0effb954cca4759994f1ac9e9434bf4_3_1":{
+            "question":"Which piece of furniture is built for sitting?",
+            "answer":"a bookshelf",
+            "response_type":"multiplechoiceresponse",
+            "input_type":"choicegroup",
+            "correct":false,
+            "variant":"",
+            "group_label":""
+         }
+      }
+   },
+   "time":"2023-08-03T06:31:39.005451+00:00",
+   "event_type":"problem_check",
+   "event_source":"server",
+   "page":"x_module"
+}
diff --git a/event_routing_backends/processors/tests/transformers_test_mixin.py b/event_routing_backends/processors/tests/transformers_test_mixin.py
index 083c1c62..a5db646e 100644
--- a/event_routing_backends/processors/tests/transformers_test_mixin.py
+++ b/event_routing_backends/processors/tests/transformers_test_mixin.py
@@ -5,6 +5,7 @@
 import os
 from abc import abstractmethod
 from unittest.mock import patch
+from uuid import UUID
 
 import ddt
 import pytest
@@ -90,11 +91,12 @@ def compare_events(self, transformed_event, expected_event):
         Every transformer's test case will implement its own logic to test
         events transformation
         """
-    @patch('event_routing_backends.helpers.uuid')
+    @patch('event_routing_backends.helpers.uuid.uuid4')
     @ddt.data(*EVENT_FIXTURE_FILENAMES)
-    def test_event_transformer(self, event_filename, mocked_uuid):
-        mocked_uuid.uuid4.return_value = '32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb'
-        mocked_uuid.uuid5.return_value = '32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb'
+    def test_event_transformer(self, event_filename, mocked_uuid4):
+        # Used to generate the anonymized actor.name,
+        # which in turn is used to generate the event UUID.
+        mocked_uuid4.return_value = UUID('32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb')
 
         # if an event's expected fixture doesn't exist, the test shouldn't fail.
         # evaluate transformation of only supported event fixtures.
@@ -118,7 +120,16 @@ def test_event_transformer(self, event_filename, mocked_uuid):
                     self.compare_events(actual_transformed_event, expected_event)
                 except Exception as e:  # pragma: no cover
                     with open(f"test_output/generated.{event_filename}.json", "w") as actual_transformed_event_file:
-                        actual_transformed_event_file.write(actual_transformed_event.to_json())
+                        try:
+                            actual_transformed_event_file.write(actual_transformed_event.to_json())
+                        # Lists of events will trigger this exception and need to be transformed together
+                        except AttributeError:
+                            actual_transformed_event_file.write("[")
+                            out_events = []
+                            for event in actual_transformed_event:
+                                out_events.append(event.to_json())
+                            actual_transformed_event_file.write(",".join(out_events))
+                            actual_transformed_event_file.write("]")
 
                     with open(f"test_output/expected.{event_filename}.json", "w") as expected_event_file:
                         json.dump(expected_event, expected_event_file, indent=4)
diff --git a/event_routing_backends/processors/xapi/event_transformers/problem_interaction_events.py b/event_routing_backends/processors/xapi/event_transformers/problem_interaction_events.py
index 6536b70f..3f9d2806 100644
--- a/event_routing_backends/processors/xapi/event_transformers/problem_interaction_events.py
+++ b/event_routing_backends/processors/xapi/event_transformers/problem_interaction_events.py
@@ -6,7 +6,13 @@
 from event_routing_backends.helpers import get_problem_block_id
 from event_routing_backends.processors.xapi import constants
 from event_routing_backends.processors.xapi.registry import XApiTransformersRegistry
-from event_routing_backends.processors.xapi.transformer import XApiTransformer, XApiVerbTransformerMixin
+from event_routing_backends.processors.xapi.statements import GroupActivity
+from event_routing_backends.processors.xapi.transformer import (
+    OneToManyChildXApiTransformerMixin,
+    OneToManyXApiTransformerMixin,
+    XApiTransformer,
+    XApiVerbTransformerMixin,
+)
 
 # map open edx problems interation types to xAPI valid interaction types
 INTERACTION_TYPES_MAP = {
@@ -76,19 +82,41 @@ def get_object(self):
         Returns:
             `Activity`
         """
+        object_id = self.get_object_id()
+        definition = self.get_object_definition()
+        return Activity(
+            id=object_id,
+            definition=definition,
+        )
+
+    def get_object_id(self):
+        """
+        Returns the object.id
+
+        Returns:
+            str
+        """
         object_id = None
         data = self.get_data('data')
         if data and isinstance(data, dict):
             object_id = self.get_data('data.problem_id') or self.get_data('data.module_id', True)
+        else:
+            object_id = self.get_data('usage_key')
+
+        return object_id
 
+    def get_object_definition(self):
+        """
+        Returns the definition portion of the object stanza.
+
+        Returns:
+            ActivityDefinition
+        """
         event_name = self.get_data('name', True)
 
-        return Activity(
-            id=object_id,
-            definition=ActivityDefinition(
-                type=EVENT_OBJECT_DEFINITION_TYPE[event_name] if event_name in EVENT_OBJECT_DEFINITION_TYPE else
-                constants.XAPI_ACTIVITY_INTERACTION,
-            ),
+        return ActivityDefinition(
+            type=EVENT_OBJECT_DEFINITION_TYPE[event_name] if event_name in EVENT_OBJECT_DEFINITION_TYPE else
+            constants.XAPI_ACTIVITY_INTERACTION,
         )
 
 
@@ -169,10 +197,16 @@ def get_result(self):
         )
 
 
-@XApiTransformersRegistry.register('problem_check')
-class ProblemCheckTransformer(BaseProblemsTransformer):
+class BaseProblemCheckTransformer(BaseProblemsTransformer):
     """
-    Transform problem interaction related events into xAPI format.
+    Transform problem check events into one or more xAPI statements.
+
+    If there is only one question in the source event problem, then transform() returns a single Activity.
+
+    But if there are multiple questions in the source event problem, transform() will return:
+
+    * 1 parent GroupActivity
+    * N "child" Activity which reference the parent, where N>=0
     """
     additional_fields = ('result', )
 
@@ -201,19 +235,33 @@ def get_object(self):
             if xapi_object.id:
                 xapi_object.id = self.get_object_iri('xblock', xapi_object.id)
 
+        return xapi_object
+
+    def get_object_definition(self):
+        """
+        Returns the definition portion of the object stanza.
+
+        Returns:
+            ActivityDefinition
+        """
+        definition = super().get_object_definition()
+
         if self.get_data('data.attempts'):
-            xapi_object.definition.extensions = Extensions({
+            definition.extensions = Extensions({
                 constants.XAPI_ACTIVITY_ATTEMPT: self.get_data('data.attempts')
             })
         interaction_type = self._get_interaction_type()
+        display_name = self.get_data('display_name')
         submission = self._get_submission()
         if submission:
-            interaction_type = INTERACTION_TYPES_MAP[submission['response_type']]
-            xapi_object.definition.description = LanguageMap({constants.EN_US: submission['question']})
+            interaction_type = INTERACTION_TYPES_MAP.get(submission.get('response_type'), DEFAULT_INTERACTION_TYPE)
+            definition.description = LanguageMap({constants.EN_US: submission['question']})
+        elif display_name:
+            definition.name = LanguageMap({constants.EN_US: display_name})
 
-        xapi_object.definition.interaction_type = interaction_type
+        definition.interaction_type = interaction_type
 
-        return xapi_object
+        return definition
 
     def _get_submission(self):
         """
@@ -265,11 +313,13 @@ def get_result(self):
         submission = self._get_submission()
         if submission:
             response = submission["answer"]
+            correct = submission.get("correct")
         else:
             response = event_data.get('answers', None)
+            correct = self.get_data('success') == 'correct'
 
-        max_grade = event_data.get('max_grade', None)
-        grade = event_data.get('grade', None)
+        max_grade = self.get_data('max_grade')
+        grade = self.get_data('grade')
         scaled = None
 
         if max_grade is not None and grade is not None:
@@ -279,7 +329,7 @@ def get_result(self):
                 scaled = 0
 
         return Result(
-            success=event_data.get('success', None) == 'correct',
+            success=correct,
             score={
                 'min': 0,
                 'max': max_grade,
@@ -288,3 +338,120 @@ def get_result(self):
             },
             response=response
         )
+
+
+@XApiTransformersRegistry.register('problem_check')
+class ProblemCheckTransformer(OneToManyXApiTransformerMixin, BaseProblemCheckTransformer):
+    """
+    Transform problem check events into one or more xAPI statements.
+
+    If there is only one question in the source event problem, then transform() returns a single Activity.
+
+    But if there are multiple questions in the source event problem, transform() will return:
+
+    * 1 parent GroupActivity
+    * N "child" Activity which reference the parent, where N>=0
+    """
+    @property
+    def child_transformer_class(self):
+        """
+        Returns the ProblemCheckChildTransformer class.
+
+        Returns:
+            Type
+        """
+        return ProblemCheckChildTransformer
+
+    def get_child_ids(self):
+        """
+        Returns the list of "child" event IDs.
+
+        In this context, "child" events relate to multiple submissions to sub-questions in the problem.
+
+        If <1 children are found on this event, then <1 child events are returned in the list.
+        Otherwise, we say that "this event has no children", and so this method returns an empty list.
+
+        Returns:
+            list of strings
+        """
+        submissions = self.get_data('submission') or {}
+        child_ids = submissions.keys()
+        if len(child_ids) > 1:
+            return child_ids
+        return []
+
+    def get_object(self):
+        """
+        Get object for xAPI transformed event or group of events.
+
+        Returns:
+            `Activity` or `GroupActivity`
+        """
+        activity = super().get_object()
+        definition = self.get_object_definition()
+
+        if self.get_child_ids():
+            activity = GroupActivity(
+                id=activity.id,
+                definition=definition,
+            )
+
+        return activity
+
+    def get_object_definition(self):
+        """
+        Returns the definition portion of the object stanza.
+
+        Returns:
+            ActivityDefinition
+        """
+        definition = super().get_object_definition()
+
+        if self.get_child_ids():
+            definition.interaction_type = DEFAULT_INTERACTION_TYPE
+
+        return definition
+
+
+class ProblemCheckChildTransformer(OneToManyChildXApiTransformerMixin, BaseProblemCheckTransformer):
+    """
+    Transformer for subproblems of a multi-question problem_check event.
+    """
+    def _get_submission(self):
+        """
+        Return this child's submission data from the event data, if valid.
+
+        Returns:
+            dict
+        """
+        submissions = self.get_data('submission') or {}
+        return submissions.get(self.child_id)
+
+    def get_object_id(self):
+        """
+        Returns the child object.id, which it creates from the parent object.id
+        and the child_id.
+
+        Returns:
+            str
+        """
+        object_id = super().get_object_id() or ""
+        object_id = '@'.join([
+            *object_id.split('@')[:-1],
+            self.child_id,
+        ])
+        return object_id
+
+    def get_result(self):
+        """
+        Get result for the xAPI transformed child event.
+
+        Returns:
+            `Result`
+        """
+        result = super().get_result()
+        # Don't report the score on child events; only the parent knows the score.
+        result.score = None
+        submission = self._get_submission() or {}
+        result.response = submission.get('answer')
+        return result
diff --git a/event_routing_backends/processors/xapi/statements.py b/event_routing_backends/processors/xapi/statements.py
new file mode 100644
index 00000000..11951308
--- /dev/null
+++ b/event_routing_backends/processors/xapi/statements.py
@@ -0,0 +1,15 @@
+"""
+xAPI statement classes
+"""
+from tincan import Activity
+
+
+class GroupActivity(Activity):
+    """
+    Subclass of tincan.Activity which reports object_type="GroupActivity"
+
+    For use with Activites that contain one or more child Activities, like Problems that contain multiple Questions.
+    """
+    @Activity.object_type.setter
+    def object_type(self, _):
+        self._object_type = 'GroupActivity'
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/complete_video.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/complete_video.json
index 0fa34a0f..3e533bfb 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/complete_video.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/complete_video.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "f7c8b743-f18f-5016-8455-35ff8a2f8020",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.completion.block_completion.changed.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.completion.block_completion.changed.json
index 4ea719af..2aa7c6ea 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.completion.block_completion.changed.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.completion.block_completion.changed.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "88e13618-29ec-5b75-9de7-e2e220af1728",
   "result": {
     "completion": true,
     "extensions": { "https://w3id.org/xapi/cmi5/result/extensions/progress": 100.0 }
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.enterprise.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.enterprise.json
index 315695a0..53ecd183 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.enterprise.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.enterprise.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "bb946682-b0b9-5dc2-a17c-605ef5833c98",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.json
index 15a14a0a..de5b0fa9 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "bb946682-b0b9-5dc2-a17c-605ef5833c98",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.required.only.data.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.required.only.data.json
index 6fc9a13d..ce15adff 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.required.only.data.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.activated.required.only.data.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "bb946682-b0b9-5dc2-a17c-605ef5833c98",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.deactivated.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.deactivated.json
index c800b746..77864cfc 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.deactivated.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.deactivated.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "074afb4a-90d6-57d6-8a6a-4867b4bfcc5f",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.mode_changed.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.mode_changed.json
index 15a14a0a..de5b0fa9 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.mode_changed.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.enrollment.mode_changed.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "bb946682-b0b9-5dc2-a17c-605ef5833c98",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.now_failed.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.now_failed.json
index 0996e118..32af2314 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.now_failed.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.now_failed.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "ecf2a41b-d1c8-50f7-bd6f-79b305159dae",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.now_passed.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.now_passed.json
index faf9c666..1da4c9a5 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.now_passed.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.now_passed.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "ebfef69f-dd05-5bf0-bf90-bad645bc6992",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.passed.first_time.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.passed.first_time.json
index faf9c666..1da4c9a5 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.passed.first_time.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.course.grade.passed.first_time.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "ebfef69f-dd05-5bf0-bf90-bad645bc6992",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.created.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.created.json
index 7f6e60f0..16127d3d 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.created.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.created.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "ca2a0abb-2dd6-5032-86c5-360a9fff4404",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.deleted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.deleted.json
index 5e98e8ac..4cf59452 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.deleted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.deleted.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "b8f6d5e1-50a3-573c-adf6-72c5bfc46112",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.edited.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.edited.json
index 78474a82..7807b92c 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.edited.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.edited.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "2553ef8a-5838-5ed1-9d40-0cb238a11c71",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.reported.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.reported.json
index a8dd965c..e5e599cc 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.reported.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.reported.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "84683715-6e1b-54a9-af87-ee8c193af8f9",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.unreported.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.unreported.json
index b7e61193..70252012 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.unreported.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.unreported.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "995dcbbd-d6fd-5440-825f-7e5f2daf0588",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.created.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.created.json
index ad1e325f..1377089d 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.created.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.created.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "b57c965a-218a-5a17-aee8-9f3dc75c5bb3",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.deleted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.deleted.json
index 29818cd9..d73b9334 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.deleted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.deleted.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "54acd352-b4f5-56fb-a328-d7fa43d90710",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.edited.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.edited.json
index 64922c5b..5743425e 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.edited.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.edited.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "196cf44f-9d76-5d76-ac0d-683359d9b88b",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.reported.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.reported.json
index f5a410ff..cef6fe26 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.reported.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.reported.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "b52e9a1c-3ff6-5841-8cb3-d9edbed4fc4f",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.unreported.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.unreported.json
index d1f39321..a5a035e1 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.unreported.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.unreported.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "23ae2117-975a-5669-9d1d-cc47928b1959",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.voted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.voted.json
index ddb4c5f0..3aea4a9f 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.voted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.response.voted.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "806c7c48-7df6-56b9-bdb0-c379a968acf5",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.created.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.created.json
index 4e9983c9..929ea31d 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.created.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.created.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "a4e3d431-0281-5b3e-bcf7-0ddbeb8543b2",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.deleted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.deleted.json
index df1d36c9..5a7a9655 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.deleted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.deleted.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "e57ea5a8-ad20-5717-b648-824bede138aa",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.edited.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.edited.json
index f9285491..26f92d11 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.edited.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.edited.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "ae1a9bfe-2d3b-5afd-87f4-ad8d4c596932",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.reported.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.reported.json
index 600c16d2..486b8276 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.reported.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.reported.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "81c7f03f-e07e-5b54-9095-f5019e5bbef3",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.unreported.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.unreported.json
index b83df2a9..d28b70d2 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.unreported.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.unreported.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "0ce637d7-e823-5447-8cdf-8da3afb4fd9b",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.viewed.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.viewed.json
index c51212f8..a00c62e8 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.viewed.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.viewed.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "d1325940-fe1b-5042-90c1-e3365960c9a1",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.voted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.voted.json
index c7fe0a24..e1fdac8a 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.voted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.thread.voted.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "883a9580-f6bc-55b6-b5c8-1d5a13a8bdd7",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.course.grade_calculated_letter_grade.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.course.grade_calculated_letter_grade.json
index ea2b45ec..7501c232 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.course.grade_calculated_letter_grade.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.course.grade_calculated_letter_grade.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "375b9512-1f1c-541d-96da-0d4eeff13116",
   "result": {
     "score": {
       "scaled": 1.0,
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.course.grade_calculated_no_letter_grade.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.course.grade_calculated_no_letter_grade.json
index 85135e05..328c7426 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.course.grade_calculated_no_letter_grade.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.course.grade_calculated_no_letter_grade.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "375b9512-1f1c-541d-96da-0d4eeff13116",
   "result": {
     "score": {
       "scaled": 0.02,
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.problem.submitted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.problem.submitted.json
index 32f81365..1b88f869 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.problem.submitted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.problem.submitted.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "a10da8af-8e6a-5d1c-b7d5-cdabaacc0ba8",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.problem.submitted.weighted_possible_0.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.problem.submitted.weighted_possible_0.json
index d110ad8f..c147e570 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.problem.submitted.weighted_possible_0.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.problem.submitted.weighted_possible_0.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "a10da8af-8e6a-5d1c-b7d5-cdabaacc0ba8",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.subsection.grade_calculated.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.subsection.grade_calculated.json
index 231ecb37..e09f487e 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.subsection.grade_calculated.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.subsection.grade_calculated.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "7e8d93b1-1fe9-53a1-a3d2-60a2a931f80a",
   "result": { "score": { "scaled": 1.0, "raw": 3.0, "min": 0.0, "max": 3.0 }, "success": true },
   "version": "1.0.3",
   "actor": {
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.subsection.grade_calculated.weighted_possible_0.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.subsection.grade_calculated.weighted_possible_0.json
index 3fb42447..dac3ee27 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.subsection.grade_calculated.weighted_possible_0.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.grades.subsection.grade_calculated.weighted_possible_0.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "7e8d93b1-1fe9-53a1-a3d2-60a2a931f80a",
   "result": { "score": { "scaled": 0.0, "raw": 0.0, "min": 0.0, "max": 0.0 }, "success": true },
   "version": "1.0.3",
   "actor": {
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.problem.completed(proposed).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.problem.completed(proposed).json
index f8380c0d..ee707af4 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.problem.completed(proposed).json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.problem.completed(proposed).json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "1940cdf9-6a89-5cb7-82f9-5b0955584db8",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.problem.hint.demandhint_displayed.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.problem.hint.demandhint_displayed.json
index 5ec5acbb..d8b54e3e 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.problem.hint.demandhint_displayed.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.problem.hint.demandhint_displayed.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "e9b9ba0f-d976-5656-9a6c-d432b12335ea",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.created.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.created.json
index e57d2db7..ac96237e 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.created.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.created.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "eb1aa991-fbf2-5ea4-a699-7533030f0c44",
   "version": "1.0.3",
   "actor": {
     "objectType": "Agent",
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.submitted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.submitted.json
index dc437b4b..02ead3d4 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.submitted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.submitted.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "2399cb4b-a054-5d49-91cb-1fac2201da03",
   "version": "1.0.3",
   "actor": {
     "objectType": "Agent",
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.proctored.attempt.created.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.proctored.attempt.created.json
index 795c5cd7..d0ebcb07 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.proctored.attempt.created.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.proctored.attempt.created.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "eb1aa991-fbf2-5ea4-a699-7533030f0c44",
   "version": "1.0.3",
   "actor": {
     "objectType": "Agent",
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.proctored.attempt.submitted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.proctored.attempt.submitted.json
index fef793a3..bf4acb8b 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.proctored.attempt.submitted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.proctored.attempt.submitted.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "2399cb4b-a054-5d49-91cb-1fac2201da03",
   "version": "1.0.3",
   "actor": {
     "objectType": "Agent",
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.timed.attempt.created.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.timed.attempt.created.json
index 1fc4f26d..0e466b14 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.timed.attempt.created.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.timed.attempt.created.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "eb1aa991-fbf2-5ea4-a699-7533030f0c44",
   "version": "1.0.3",
   "actor": {
     "objectType": "Agent",
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.timed.attempt.submitted.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.timed.attempt.submitted.json
index 4c54f35b..84370c4d 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.timed.attempt.submitted.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.timed.attempt.submitted.json
@@ -1,5 +1,5 @@
 {
-  "id": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+  "id": "2399cb4b-a054-5d49-91cb-1fac2201da03",
   "version": "1.0.3",
   "actor": {
     "objectType": "Agent",
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked(anonymous_user).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked(anonymous_user).json
index bda507cd..31a0ac3a 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked(anonymous_user).json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked(anonymous_user).json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "01b620b3-0cba-556e-96d5-d1e9ef63489d",
     "actor": {
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"},
         "objectType": "Agent"
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked.json
index 62dcf609..c259f5b6 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "01b620b3-0cba-556e-96d5-d1e9ef63489d",
     "actor": {
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"},
         "objectType": "Agent"
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked.required.only.data.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked.required.only.data.json
index 155982c8..ce5aec8b 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked.required.only.data.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.link_clicked.required.only.data.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "01b620b3-0cba-556e-96d5-d1e9ef63489d",
     "actor": {
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"},
         "objectType": "Agent"
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.outline.selected.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.outline.selected.json
index ef178ed7..c050b005 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.outline.selected.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.outline.selected.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "d30c30af-2eeb-5ae3-a765-4e2ca9bb3283",
     "actor": {
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"},
         "objectType": "Agent"
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.next_selected.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.next_selected.json
index c344e017..261f2611 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.next_selected.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.next_selected.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "2802561d-3e8e-56d4-8944-07a8fbfd02b2",
     "actor": {
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"},
         "objectType": "Agent"
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.previous_selected.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.previous_selected.json
index 9957a861..b12e3e2d 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.previous_selected.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.previous_selected.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "6e0efdce-2611-52f8-a213-dcd81b78cfbd",
     "actor": {
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"},
         "objectType": "Agent"
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.tab_selected.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.tab_selected.json
index 3cea2076..a7073946 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.tab_selected.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.ui.lms.sequence.tab_selected.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "0f73de3b-445e-5674-aab9-b0117c64671a",
     "actor": {
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"},
         "objectType": "Agent"
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.video.closed_captions.hidden.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.video.closed_captions.hidden.json
index 5753ce82..c4f5c103 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.video.closed_captions.hidden.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.video.closed_captions.hidden.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "9e08cf47-e86f-5b64-b48f-a4d524f9a7e4",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.video.closed_captions.shown.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.video.closed_captions.shown.json
index c0b57780..468f5b9a 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.video.closed_captions.shown.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/edx.video.closed_captions.shown.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "9e08cf47-e86f-5b64-b48f-a4d524f9a7e4",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/hide_transcript.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/hide_transcript.json
index 1f5e17bd..32b8efec 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/hide_transcript.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/hide_transcript.json
@@ -1,5 +1,5 @@
 {
-    "id": "0b9e39477cf34507a7a48f74be381fdd",
+    "id": "8c936f51-267d-51ad-a850-9fffdb7595de",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/load_video.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/load_video.json
index 27a16982..d0ffb4ac 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/load_video.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/load_video.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "3feca024-a2a2-5ee3-9307-50711dc48abd",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/load_video.required.only.data.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/load_video.required.only.data.json
index 877da649..37065c1f 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/load_video.required.only.data.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/load_video.required.only.data.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "3feca024-a2a2-5ee3-9307-50711dc48abd",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/pause_video.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/pause_video.json
index 007a1ab2..6b471695 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/pause_video.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/pause_video.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "b2fff5f6-c77d-5aa4-a08b-bb547d6ee5a6",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/play_video.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/play_video.json
index b74454b4..4e4d2e17 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/play_video.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/play_video.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "203e182c-6a2d-5458-9c61-a271297d459a",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser).json
index 2a7eef9a..ad39df5f 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser).json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser).json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "2a1f0f7c-6636-52df-913b-59e2f197a58e",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
@@ -26,6 +26,7 @@
     },
     "object": {
         "definition": {
+            "interactionType": "other",
             "type": "http://adlnet.gov/expapi/activities/cmi.interaction"
         },
         "id": "http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@3fc5461f86764ad7bdbdf6cbdde61e66",
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser).required.only.data.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser).required.only.data.json
index 0628996d..1d466f6c 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser).required.only.data.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser).required.only.data.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "37e0953c-fa85-5435-8c53-723909ab81d9",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser)legacy.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser)legacy.json
index 2d04afa4..398f4e06 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser)legacy.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(browser)legacy.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "2a1f0f7c-6636-52df-913b-59e2f197a58e",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
@@ -26,6 +26,7 @@
     },
     "object": {
         "definition": {
+            "interactionType": "other",
             "type": "http://adlnet.gov/expapi/activities/cmi.interaction"
         },
         "id": "http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@sequential+block@ef37eb3cf1724e38b7f88a9ce85a4842",
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server).json
index d15b6a37..3fb71d5a 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server).json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server).json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "c9c7da1a-0cf0-5161-9bf5-35c61091f826",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server).max_grade_0.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server).max_grade_0.json
index c287bad1..5cf96cc3 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server).max_grade_0.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server).max_grade_0.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "c9c7da1a-0cf0-5161-9bf5-35c61091f826",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server)_no_response_type.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server)_no_response_type.json
index 81c84bc8..cde5281a 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server)_no_response_type.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server)_no_response_type.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "c9c7da1a-0cf0-5161-9bf5-35c61091f826",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
@@ -29,6 +29,7 @@
             "extensions":{
               "http://id.tincanapi.com/extension/attempt-id": 10
             },
+            "name": {"en-US": "Checkboxes"},
             "interactionType": "other",
             "type": "http://adlnet.gov/expapi/activities/cmi.interaction"
         },
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,correct).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,correct).json
new file mode 100644
index 00000000..265dd612
--- /dev/null
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,correct).json
@@ -0,0 +1,251 @@
+[
+{
+  "id": "8ac118c6-7964-5939-8b2b-fa3070881c66",
+  "result": {"score": {"min": 0, "max": 3, "raw": 3, "scaled": 1}, "success": true},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "GroupActivity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "name": {"en-US": "Multiple Choice Questions"},
+      "interactionType": "other"
+    }
+  },
+    "timestamp": "2023-08-03T06:32:31.431355+00:00",
+  "context": {
+    "contextActivities": {
+      "parent": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "97662bef7c463c187b8fd91e0f580468"
+    }
+  }
+},
+{
+  "id": "7e4f87d3-911b-581b-b41e-7b4d938c4647",
+  "result": {"response": "blue", "success": true},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_2_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "What color is the open ocean on a sunny day?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:32:31.431355+00:00",
+  "context": {
+    "statement": {
+      "id": "8ac118c6-7964-5939-8b2b-fa3070881c66",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "97662bef7c463c187b8fd91e0f580468"
+    }
+  }
+},
+{
+  "id": "19ff71b6-3e82-5dda-886d-f98182d61b90",
+  "result": {"response": "['a piano', 'a guitar']", "success": true},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_4_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "Which of the following are musical instruments?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:32:31.431355+00:00",
+  "context": {
+    "statement": {
+      "id": "8ac118c6-7964-5939-8b2b-fa3070881c66",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "97662bef7c463c187b8fd91e0f580468"
+    }
+  }
+},
+{
+  "id": "02d16f04-dde1-5d0f-8a6c-abe76128db76",
+  "result": {"response": "a chair", "success": true},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_3_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "Which piece of furniture is built for sitting?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:32:31.431355+00:00",
+  "context": {
+    "statement": {
+      "id": "8ac118c6-7964-5939-8b2b-fa3070881c66",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "97662bef7c463c187b8fd91e0f580468"
+    }
+  }
+}
+]
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,incorrect).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,incorrect).json
new file mode 100644
index 00000000..c3d7c7be
--- /dev/null
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,incorrect).json
@@ -0,0 +1,253 @@
+[
+{
+  "id": "980a041a-19a8-59c6-9e6c-72fd94d2577e",
+  "result": {"score": {"min": 0, "max": 3, "raw": 0, "scaled": 0}, "success": false},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "GroupActivity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "name": {
+        "en-US": "Multiple Choice Questions"
+      },
+      "interactionType": "other"
+    }
+  },
+    "timestamp": "2023-08-03T06:30:32.026903+00:00",
+  "context": {
+    "contextActivities": {
+      "parent": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "97662bef7c463c187b8fd91e0f580468"
+    }
+  }
+},
+{
+  "id": "e734c4c4-0c9f-53c9-ae3a-056705d552a1",
+  "result": {"response": "yellow", "success": false},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_2_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "What color is the open ocean on a sunny day?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:30:32.026903+00:00",
+  "context": {
+    "statement": {
+      "id": "980a041a-19a8-59c6-9e6c-72fd94d2577e",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "97662bef7c463c187b8fd91e0f580468"
+    }
+  }
+},
+{
+  "id": "fd898be3-1b7e-5273-a83f-02cb95cbb91d",
+  "result": {"response": "['a window']", "success": false},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_4_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "Which of the following are musical instruments?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:30:32.026903+00:00",
+  "context": {
+    "statement": {
+      "id": "980a041a-19a8-59c6-9e6c-72fd94d2577e",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "97662bef7c463c187b8fd91e0f580468"
+    }
+  }
+},
+{
+  "id": "59ce6fe5-4ecc-5aa2-bc2d-00043b4a481d",
+  "result": {"response": "a bookshelf", "success": false},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_3_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "Which piece of furniture is built for sitting?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:30:32.026903+00:00",
+  "context": {
+    "statement": {
+      "id": "980a041a-19a8-59c6-9e6c-72fd94d2577e",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "97662bef7c463c187b8fd91e0f580468"
+    }
+  }
+}
+]
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,partial_correct).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,partial_correct).json
new file mode 100644
index 00000000..0e9e6319
--- /dev/null
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,multiple_questions,partial_correct).json
@@ -0,0 +1,251 @@
+[
+{
+  "id": "7d8be6d2-15b9-5f0d-bdfc-4e2daee2eee4",
+  "result": {"score": {"min": 0, "max": 3, "raw": 2, "scaled": 0.6666666666666666}, "success": false},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "GroupActivity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "name": {"en-US": "Multiple Choice Questions"},
+      "interactionType": "other"
+    }
+  },
+    "timestamp": "2023-08-03T06:31:39.005451+00:00",
+  "context": {
+    "contextActivities": {
+      "parent": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "2c65c4e9e6a637feb42426fd35b5dac3"
+    }
+  }
+},
+{
+  "id": "f3e25970-2c71-57a6-9ba9-8ba714e68f76",
+  "result": {"response": "blue", "success": true},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_2_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "What color is the open ocean on a sunny day?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:31:39.005451+00:00",
+  "context": {
+    "statement": {
+      "id": "7d8be6d2-15b9-5f0d-bdfc-4e2daee2eee4",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "2c65c4e9e6a637feb42426fd35b5dac3"
+    }
+  }
+},
+{
+  "id": "8a30b6a8-b9a3-5246-8a23-7bed05cfc031",
+  "result": {"response": "['a piano', 'a guitar']", "success": true},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_4_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "Which of the following are musical instruments?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:31:39.005451+00:00",
+  "context": {
+    "statement": {
+      "id": "7d8be6d2-15b9-5f0d-bdfc-4e2daee2eee4",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "2c65c4e9e6a637feb42426fd35b5dac3"
+    }
+  }
+},
+{
+  "id": "b7d38689-d6fc-594e-9f8b-79cca5f7302c",
+  "result": {"response": "a bookshelf", "success": false},
+  "version": "1.0.3",
+  "actor": {
+    "objectType": "Agent",
+    "account": {
+      "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb",
+      "homePage": "http://localhost:18000"
+    }
+  },
+  "verb": {
+    "id": "https://w3id.org/xapi/acrossx/verbs/evaluated",
+    "display": {
+      "en": "evaluated"
+    }
+  },
+  "object": {
+    "objectType": "Activity",
+    "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4_3_1",
+    "definition": {
+      "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+      "description": {
+        "en-US": "Which piece of furniture is built for sitting?"
+      },
+      "interactionType": "choice"
+    }
+  },
+    "timestamp": "2023-08-03T06:31:39.005451+00:00",
+  "context": {
+    "statement": {
+      "id": "7d8be6d2-15b9-5f0d-bdfc-4e2daee2eee4",
+      "objectType": "StatementRef"
+    },
+    "contextActivities": {
+      "parent": [
+        {
+          "objectType": "GroupActivity",
+          "id" :"http://localhost:18000/xblock/block-v1:edX+DemoX+Demo_Course+type@problem+block@a0effb954cca4759994f1ac9e9434bf4",
+          "definition": {
+            "type": "http://adlnet.gov/expapi/activities/cmi.interaction",
+            "name": {
+              "en-US": "Multiple Choice Questions"
+            },
+            "interactionType": "other"
+          }
+        }
+      ],
+      "grouping": [
+        {
+          "id": "http://localhost:18000/course/course-v1:edX+DemoX+Demo_Course",
+          "objectType": "Activity",
+          "definition": {
+            "name": {
+              "en-US": "Demonstration Course"
+            },
+            "type": "http://adlnet.gov/expapi/activities/course"
+          }
+        }
+      ]
+    },
+    "extensions": {
+      "https://w3id.org/xapi/openedx/extension/transformer-version": "event-routing-backends@1.1.1",
+      "https://w3id.org/xapi/openedx/extensions/session-id": "2c65c4e9e6a637feb42426fd35b5dac3"
+    }
+  }
+}
+]
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,string_anwers).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,string_anwers).json
index 04ec3fe6..7b22833e 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,string_anwers).json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,string_anwers).json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "c9c7da1a-0cf0-5161-9bf5-35c61091f826",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,unsupported_responsetype).json b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,unsupported_responsetype).json
index 7e9e8c76..bf6204c3 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,unsupported_responsetype).json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/problem_check(server,unsupported_responsetype).json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "c9c7da1a-0cf0-5161-9bf5-35c61091f826",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/seek_video.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/seek_video.json
index 86dc8def..dedd4022 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/seek_video.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/seek_video.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "50e46aad-346e-58da-ab55-e599abcd554c",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/show_transcript.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/show_transcript.json
index 543cd097..52714c85 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/show_transcript.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/show_transcript.json
@@ -1,5 +1,5 @@
 {
-    "id": "0b9e39477cf34507a7a48f74be381fdd",
+    "id": "8c936f51-267d-51ad-a850-9fffdb7595de",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/showanswer.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/showanswer.json
index f4b40e3e..64513665 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/showanswer.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/showanswer.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "c552e1bc-2a30-555c-99e8-79d72413eaf7",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/speed_change_video.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/speed_change_video.json
index 9b49bc4f..7a2762c4 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/speed_change_video.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/speed_change_video.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "2f31f095-ee62-54d8-bcab-8e764a45b47f",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/stop_video.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/stop_video.json
index 34acb8cf..52b61316 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/stop_video.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/stop_video.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "d079c151-11f1-5a91-8e49-9627a5c9832d",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/video_hide_cc_menu.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/video_hide_cc_menu.json
index 5753ce82..c4f5c103 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/video_hide_cc_menu.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/video_hide_cc_menu.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "9e08cf47-e86f-5b64-b48f-a4d524f9a7e4",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/fixtures/expected/video_show_cc_menu.json b/event_routing_backends/processors/xapi/tests/fixtures/expected/video_show_cc_menu.json
index c0b57780..468f5b9a 100644
--- a/event_routing_backends/processors/xapi/tests/fixtures/expected/video_show_cc_menu.json
+++ b/event_routing_backends/processors/xapi/tests/fixtures/expected/video_show_cc_menu.json
@@ -1,5 +1,5 @@
 {
-    "id": "6d1f033b-3f70-458c-b53a-e6bb63cbaef9",
+    "id": "9e08cf47-e86f-5b64-b48f-a4d524f9a7e4",
     "actor": {
         "objectType": "Agent",
         "account": {"homePage": "http://localhost:18000", "name": "32e08e30-f8ae-4ce2-94a8-c2bfe38a70cb"}
diff --git a/event_routing_backends/processors/xapi/tests/test_transformers.py b/event_routing_backends/processors/xapi/tests/test_transformers.py
index d40844a6..12a34649 100644
--- a/event_routing_backends/processors/xapi/tests/test_transformers.py
+++ b/event_routing_backends/processors/xapi/tests/test_transformers.py
@@ -31,6 +31,33 @@ def compare_events(self, transformed_event, expected_event):
         """
         Test that transformed_event and expected_event are identical.
 
+        Arguments:
+            transformed_event (dict or list)
+            expected_event (dict or list)
+
+        Raises:
+            AssertionError:     Raised if the two events are not same.
+        """
+        # Compare lists of events
+        if isinstance(expected_event, list):
+            assert isinstance(transformed_event, list)
+            assert len(transformed_event) == len(expected_event)
+            event_ids = set()
+            for idx, e_event in enumerate(expected_event):
+                event_ids.add(transformed_event[idx].id)
+                self._compare_events(transformed_event[idx], e_event)
+
+            # Ensure a unique event ID was applied for the parent + child events
+            assert len(event_ids) == len(transformed_event)
+
+        # Compare single events
+        else:
+            self._compare_events(transformed_event, expected_event)
+
+    def _compare_events(self, transformed_event, expected_event):
+        """
+        Test that transformed_event and expected_event are identical.
+
         Arguments:
             transformed_event (dict)
             expected_event (dict)
@@ -38,11 +65,7 @@ def compare_events(self, transformed_event, expected_event):
         Raises:
             AssertionError:     Raised if the two events are not same.
         """
-        # id is a randomly generated UUID therefore not comparing that
         transformed_event_json = json.loads(transformed_event.to_json())
-        self.assertIn('id', transformed_event_json)
-        expected_event.pop('id')
-        transformed_event_json.pop('id')
         self.assertDictEqual(expected_event, transformed_event_json)
 
     @override_settings(XAPI_AGENT_IFI_TYPE='mbox')
diff --git a/event_routing_backends/processors/xapi/tests/test_xapi.py b/event_routing_backends/processors/xapi/tests/test_xapi.py
index 9bb044ba..7510f2e0 100644
--- a/event_routing_backends/processors/xapi/tests/test_xapi.py
+++ b/event_routing_backends/processors/xapi/tests/test_xapi.py
@@ -31,7 +31,7 @@ def test_skip_event_when_disabled(self):
     @patch('event_routing_backends.processors.mixins.base_transformer_processor.logger')
     def test_send_method_with_no_transformer_implemented(self, mocked_logger):
         with self.assertRaises(EventEmissionExit):
-            self.processor(self.sample_event)
+            self.processor([self.sample_event])
 
         mocked_logger.error.assert_called_once_with(
             'Could not get transformer for %s event.',
@@ -45,7 +45,7 @@ def test_send_method_with_no_transformer_implemented(self, mocked_logger):
     @patch('event_routing_backends.processors.mixins.base_transformer_processor.logger')
     def test_send_method_with_unknown_exception(self, mocked_logger, _):
         with self.assertRaises(ValueError):
-            self.processor(self.sample_event)
+            self.processor([self.sample_event])
 
         mocked_logger.exception.assert_called_once_with(
             'There was an error while trying to transform event "sentinel.name" using XApiProcessor'
@@ -62,7 +62,22 @@ def test_send_method_with_successfull_flow(self, mocked_logger, mocked_get_trans
         mocked_transformer.transform.return_value = transformed_event
         mocked_get_transformer.return_value = mocked_transformer
 
-        self.processor(self.sample_event)
+        self.processor([self.sample_event])
+
+        self.assertIn(call(transformed_event.to_json()), mocked_logger.mock_calls)
+
+    @patch(
+        'event_routing_backends.processors.xapi.transformer_processor.XApiTransformersRegistry.get_transformer'
+    )
+    @patch('event_routing_backends.processors.xapi.transformer_processor.xapi_logger')
+    def test_send_method_with_event_list_successfull_flow(self, mocked_logger, mocked_get_transformer):
+        transformed_event = Statement()
+        transformed_event.object = Activity(id=str(uuid.uuid4()))
+        mocked_transformer = MagicMock()
+        mocked_transformer.transform.return_value = [transformed_event]
+        mocked_get_transformer.return_value = mocked_transformer
+
+        self.processor([self.sample_event])
 
         self.assertIn(call(transformed_event.to_json()), mocked_logger.mock_calls)
 
@@ -77,7 +92,7 @@ def test_send_method_with_invalid_object(self, mocked_logger, mocked_get_transfo
         mocked_get_transformer.return_value = mocked_transformer
 
         with self.assertRaises(EventEmissionExit):
-            self.processor(self.sample_event)
+            self.processor([self.sample_event])
 
         self.assertNotIn(call(transformed_event.to_json()), mocked_logger.mock_calls)
 
@@ -93,7 +108,7 @@ def test_send_method_with_successfull_flow_no_logger(self, mocked_logger, mocked
         mocked_transformer.transform.return_value = transformed_event
         mocked_get_transformer.return_value = mocked_transformer
 
-        self.processor(self.sample_event)
+        self.processor([self.sample_event])
 
         self.assertNotIn(call(transformed_event.to_json()), mocked_logger.mock_calls)
 
@@ -102,5 +117,5 @@ def test_with_no_registry(self, mocked_logger):
         backend = XApiProcessor()
         backend.registry = None
         with self.assertRaises(EventEmissionExit):
-            self.assertIsNone(backend(self.sample_event))
+            self.assertIsNone(backend([self.sample_event]))
         mocked_logger.exception.assert_called_once()
diff --git a/event_routing_backends/processors/xapi/transformer.py b/event_routing_backends/processors/xapi/transformer.py
index 15586b6d..e946d602 100644
--- a/event_routing_backends/processors/xapi/transformer.py
+++ b/event_routing_backends/processors/xapi/transformer.py
@@ -14,6 +14,7 @@
     Extensions,
     LanguageMap,
     Statement,
+    StatementRef,
     Verb,
 )
 
@@ -46,22 +47,36 @@ def transform(self):
         transformed_props["version"] = constants.XAPI_SPECIFICATION_VERSION
         return Statement(**transformed_props)
 
-    def base_transform(self):
+    def base_transform(self, transformed_event):
         """
         Transform the fields that are common for all events.
         """
-        actor = self.get_actor()
-        event_timestamp = self.get_timestamp()
-        self.transformed_event = {
-            'actor': actor,
+        transformed_event = super().base_transform(transformed_event)
+        transformed_event.update({
+            'id': self.get_event_id(),
+            'actor': self.get_actor(),
             'context': self.get_context(),
-            'timestamp': event_timestamp,
-        }
+            'timestamp': self.get_timestamp(),
+        })
+        return transformed_event
+
+    def get_event_id(self):
+        """
+        Generates the UUID for this event.
+
+        Uses the actor, event timestamp, and verb to generate a UUID for this event
+        which will be the same even if this event is re-processed.
+
+        Returns:
+            UUID
+        """
         # Warning! changing anything in these 2 lines or changing the "base_uuid" can invalidate
         # billions of rows in the database. Please have a community discussion first before introducing
         # any change in generation of UUID.
+        actor = self.get_actor()
+        event_timestamp = self.get_timestamp()
         uuid_str = f'{actor.to_json()}-{event_timestamp}'
-        self.transformed_event['id'] = get_uuid5(self.verb.to_json(), uuid_str)  # pylint: disable=no-member
+        return get_uuid5(self.verb.to_json(), uuid_str)  # pylint: disable=no-member
 
     def get_actor(self):
         """
@@ -172,3 +187,139 @@ def verb(self):
             id=verb['id'],
             display=LanguageMap({constants.EN: verb['display']})
         )
+
+
+class OneToManyXApiTransformerMixin:
+    """
+    Abstract mixin that helps transform a single input event into:
+
+    * 1 parent xAPI event, plus
+    * N "child" xAPI events, where N>=0
+    """
+    @property
+    def child_transformer_class(self):
+        """
+        Abstract property which returns the transformer class to use when transforming the child events.
+
+        Should inherit from OneToManyChildXApiTransformerMixin.
+
+        Returns:
+            Type
+        """
+        raise NotImplementedError
+
+    def get_child_ids(self):
+        """
+        Abstract method which returns the list of "child" event IDs from the parent event data.
+
+        Returns:
+            list of strings
+        """
+        raise NotImplementedError
+
+    def transform(self):
+        """
+        Transform the edX event into a list of events, if there is child data.
+
+        If transform_child_events() is Falsey, then only the parent event is returned.
+        Otherwise, returns a list containing the parent event, followed by any child events.
+
+        Returns:
+            ANY, or list of ANY
+        """
+        parent_event = super().transform()
+        child_events = self.transform_children(parent_event)
+        if child_events:
+            return [parent_event, *child_events]
+        return parent_event
+
+    def transform_children(self, parent):
+        """
+        Transform the children of the parent xAPI event.
+
+
+        Returns:
+            list of ANY
+        """
+        child_ids = self.get_child_ids()
+        ChildTransformer = self.child_transformer_class
+        return [
+            ChildTransformer(
+                child_id=child_id,
+                parent=parent,
+                event=self.event,
+            ).transform() for child_id in child_ids
+        ]
+
+
+class OneToManyChildXApiTransformerMixin:
+    """
+    Mixin for processing child xAPI events from a parent transformer.
+
+    This class handles initialization, and adds methods for the expected stanzas in the transformed child event.
+
+    The parent event transformer should inherit from OneToManyXApiTransformer.
+    """
+    def __init__(self, parent, child_id, *args, **kwargs):
+        """
+        Stores the parent event transformer, and this child's identifier,
+        for use when transforming the child data.
+        """
+        super().__init__(*args, **kwargs)
+        self.parent = parent
+        self.child_id = child_id
+
+    def get_event_id(self):
+        """
+        Generates the UUID for this event.
+
+        Uses the actor, event timestamp, verb, and child_id to generate a UUID for this child event
+        which ensures a unique event ID for each child event which also differs from the parent event,
+        which will be the same even if this event is re-processed.
+
+        Returns:
+            UUID
+        """
+        # Warning! changing anything in these 2 lines or changing the "base_uuid" can invalidate
+        # billions of rows in the database. Please have a community discussion first before introducing
+        # any change in generation of UUID.
+        actor = self.get_actor()
+        event_timestamp = self.get_timestamp()
+        name = f'{actor.to_json()}-{event_timestamp}'
+        namespace_key = f'{self.verb.to_json()}-{self.child_id}'
+        return get_uuid5(namespace_key, name)
+
+    def get_context(self):
+        """
+        Returns the context for the xAPI transformed child event.
+
+        Returns:
+            `Context`
+        """
+        return Context(
+            extensions=self.get_context_extensions(),
+            contextActivities=self.get_context_activities(),
+            statement=self.get_context_statement(),
+        )
+
+    def get_context_activities(self):
+        """
+        Get context activities for xAPI transformed event.
+
+        Returns:
+            `ContextActivities`
+        """
+        return ContextActivities(
+            parent=ActivityList([self.parent.object]),
+            grouping=ActivityList(self.parent.context.context_activities.parent),
+        )
+
+    def get_context_statement(self):
+        """
+        Returns a StatementRef that refers to the parent event.
+        Returns:
+            `StatementRef`
+        """
+        return StatementRef(
+            id=self.parent.id,
+        )
diff --git a/event_routing_backends/processors/xapi/transformer_processor.py b/event_routing_backends/processors/xapi/transformer_processor.py
index 71ac712d..d09488e9 100644
--- a/event_routing_backends/processors/xapi/transformer_processor.py
+++ b/event_routing_backends/processors/xapi/transformer_processor.py
@@ -34,7 +34,7 @@ def transform_event(self, event):
             event (dict):   Event to be transformed.
 
         Returns:
-            dict:           transformed event
+            ANY:            transformed event
 
         Raises:
             Any Exception
@@ -42,9 +42,15 @@ def transform_event(self, event):
         if not XAPI_EVENTS_ENABLED.is_enabled():
             raise NoBackendEnabled
 
-        transformed_event = super().transform_event(event)
+        transformed_events = super().transform_event(event)
+        if not transformed_events:
+            return None
 
-        if transformed_event:
+        if not isinstance(transformed_events, list):
+            transformed_events = [transformed_events]
+
+        returned_events = []
+        for transformed_event in transformed_events:
             event_json = transformed_event.to_json()
 
             if not transformed_event.object or not transformed_event.object.id:
@@ -55,6 +61,6 @@ def transform_event(self, event):
                 xapi_logger.info(event_json)
 
             logger.debug('xAPI statement of edx event "{}" is: {}'.format(event["name"], event_json))
-            return json.loads(event_json)
+            returned_events.append(json.loads(event_json))
 
-        return transformed_event
+        return returned_events