diff --git a/v3/src/components/case-table/collection-table-model.ts b/v3/src/components/case-table/collection-table-model.ts
index 51358f1a5..c332772f7 100644
--- a/v3/src/components/case-table/collection-table-model.ts
+++ b/v3/src/components/case-table/collection-table-model.ts
@@ -4,7 +4,7 @@ import { getNumericCssVariable } from "../../utilities/css-utils"
 import { symParent } from "../../models/data/data-set-types"
 
 const kDefaultRowHeaderHeight = 30
-const kDefaultRowHeight = 18
+export const kDefaultRowHeight = 18
 const kDefaultRowCount = 12
 const kDefaultGridHeight = kDefaultRowHeaderHeight + (kDefaultRowCount * kDefaultRowHeight)
 
diff --git a/v3/src/components/case-table/collection-table.tsx b/v3/src/components/case-table/collection-table.tsx
index e704e5fa6..b633a35ec 100644
--- a/v3/src/components/case-table/collection-table.tsx
+++ b/v3/src/components/case-table/collection-table.tsx
@@ -1,6 +1,6 @@
 import { comparer } from "mobx"
 import { observer } from "mobx-react-lite"
-import React, { useCallback, useEffect, useMemo, useRef } from "react"
+import React, { useCallback, useEffect, useMemo, useRef, useState } from "react"
 import DataGrid, { CellKeyboardEvent, DataGridHandle } from "react-data-grid"
 import { kCollectionTableBodyDropZoneBaseId } from "./case-table-drag-drop"
 import {
@@ -33,6 +33,9 @@ import { t } from "../../utilities/translation/translate"
 import { useCaseTableModel } from "./use-case-table-model"
 import { useCollectionTableModel } from "./use-collection-table-model"
 import { useWhiteSpaceClick } from "./use-white-space-click"
+import { collectionCaseIdFromIndex, collectionCaseIndexFromId, selectCases, setSelectedCases }
+  from "../../models/data/data-set-utils"
+import { kDefaultRowHeight } from "./collection-table-model"
 
 import "react-data-grid/lib/styles.css"
 import styles from "./case-table-shared.scss"
@@ -60,9 +63,14 @@ export const CollectionTable = observer(function CollectionTable(props: IProps)
                                 .getPropertyValue("--rdg-row-selected-background-color") || undefined
   const visibleAttributes = useVisibleAttributes(collectionId)
   const { selectedRows, setSelectedRows, handleCellClick } = useSelectedRows({ gridRef, onScrollClosestRowIntoView })
-  const { handleWhiteSpaceClick } = useWhiteSpaceClick({ gridRef })
+  const { clearCurrentSelection } = useWhiteSpaceClick({ gridRef })
   const forceUpdate = useForceUpdate()
   const { isTileSelected } = useTileModelContext()
+  const [isSelectDragging, setIsSelectDragging] = useState(false)
+  const [isDragging, setIsDragging] = useState(false) //This prevents the grid click handler from firing on mouse up
+  const [initialMousePosition, setInitialMousePosition] = useState({ x: 0, y: 0 })
+  const [lastMousePosition, setLastMousePosition] = useState({ x: 0, y: 0 }) // Track last mouse position
+  const [initialDirection, setInitialDirection] = useState<'up' | 'down' | null>(null)
 
   useEffect(function setGridElement() {
     const element = gridRef.current?.element
@@ -192,22 +200,139 @@ export const CollectionTable = observer(function CollectionTable(props: IProps)
       event.preventGridDefault()
       navigateToNextRow(event.shiftKey)
     }
+    if ((event.key === "ArrowDown" || event.key === "ArrowUp")) {
+      const caseId = args.row.__id__
+      const isCaseSelected = data?.isCaseSelected(caseId)
+      const isExtending = event.shiftKey || event.altKey || event.metaKey
+      const currentSelectionIdx = collectionCaseIndexFromId(caseId, data, collectionId)
+
+      if (currentSelectionIdx !== undefined && currentSelectionIdx !== null) {
+        const nextIndex = event.key === "ArrowDown" ? currentSelectionIdx + 1 : currentSelectionIdx - 1
+        const nextCaseId = collectionCaseIdFromIndex(nextIndex, data, collectionId)
+        if (nextCaseId) {
+          const isNextCaseSelected = data?.isCaseSelected(nextCaseId)
+          if (isExtending) {
+            if (isNextCaseSelected) {
+              selectCases([caseId], data, !isCaseSelected)
+            } else {
+              selectCases([nextCaseId], data)
+            }
+          } else {
+            setSelectedCases([nextCaseId], data)
+          }
+        }
+      }
+    }
   }
 
   const handleClick = (event: React.MouseEvent<HTMLDivElement>) => {
+    if (isDragging) {
+      setIsDragging(false)
+      return
+    }
     // the grid element is the target when clicking outside the cells (otherwise, the cell is the target)
     if (isTileSelected() && event.target === gridRef.current?.element) {
-      handleWhiteSpaceClick()
+      clearCurrentSelection()
+    }
+  }
+
+  const handleMouseDown = (event: React.MouseEvent<HTMLDivElement>) => {
+    const isExtending = event.shiftKey || event.altKey || event.metaKey
+    setIsSelectDragging(true)
+    setInitialMousePosition({ x: event.clientX, y: event.clientY })
+    setLastMousePosition({ x: event.clientX, y: event.clientY }) // Initialize last mouse position
+    setInitialDirection(null) // Reset the initial direction
+
+    if (!isExtending) {
+      clearCurrentSelection() // clear current selection
+    }
+    const target = event.target as HTMLDivElement
+    const closestDataCell = target.closest('.codap-data-cell')
+    const className = closestDataCell ? closestDataCell.className : ""
+    const caseId = className.split(" ").find(c => c.startsWith("rowId-"))?.split("-")[1]
+    if (caseId) {
+      if (selectedRows.size > 0) {
+        selectCases([caseId], data)
+      } else {
+        setSelectedCases([caseId], data)
+      }
     }
   }
 
+  const handleMouseMove = (event: React.MouseEvent<HTMLDivElement>) => {
+    const mouseMoveThreshold = Math.max(kDefaultRowHeight / 3, 5)
+    if (isSelectDragging) {
+      setIsDragging(true)
+      // Check if the mouse is inside the grid's boundaries
+      const gridElement = gridRef.current?.element
+      if (gridElement) {
+        const gridBounds = gridElement.getBoundingClientRect()
+        const { clientX, clientY } = event
+        if (
+          clientX >= gridBounds.left &&
+          clientX <= gridBounds.right &&
+          clientY >= gridBounds.top &&
+          clientY <= gridBounds.bottom
+        ) {
+          const yDiffFromInitial = clientY - initialMousePosition.y
+          const yDiffFromLast = clientY - lastMousePosition.y // Difference from the last mouse position
+          const currentDirection = yDiffFromLast > mouseMoveThreshold
+                                      ? 'down'
+                                      : yDiffFromLast < -mouseMoveThreshold ? 'up'
+                                                                            : null
+          if (!initialDirection && Math.abs(yDiffFromInitial) > mouseMoveThreshold) {
+            setInitialDirection(currentDirection)
+          }
+
+          if (currentDirection) {
+            const target = event.target as HTMLDivElement
+            const closestDataCell = target.closest('.codap-data-cell')
+            const className = closestDataCell ? closestDataCell.className : ""
+            const caseId = className.split(" ").find(c => c.startsWith("rowId-"))?.split("-")[1]
+
+            if (caseId) {
+              const caseIndex = collectionCaseIndexFromId(caseId, data, collectionId)
+            // Reset the initial direction to allow for reverse selection in the case of a user first
+            // moving the mouse up and then down or vice versa past the initially selected case
+              if (
+                (initialDirection === 'down' && currentDirection === 'up' && clientY < initialMousePosition.y) ||
+                (initialDirection === 'up' && currentDirection === 'down' && clientY > initialMousePosition.y)
+              ) {
+                setInitialDirection(currentDirection)
+              }
+              
+              if (currentDirection === initialDirection) {
+                selectCases([caseId], data)
+              } else {
+                // Deselect if moving in the opposite direction
+                if (initialDirection === 'down') {
+                  const nextCaseId = caseIndex && collectionCaseIdFromIndex(caseIndex + 1, data, collectionId)
+                  nextCaseId && selectCases([nextCaseId], data, false)
+                } else if (initialDirection === 'up') {
+                  const prevCaseId = caseIndex && collectionCaseIdFromIndex(caseIndex - 1, data, collectionId)
+                  prevCaseId && selectCases([prevCaseId], data, false)
+                }
+              }
+            }
+            setLastMousePosition({ x: clientX, y: clientY })
+          }
+        }
+      }
+    }
+  }
+
+  const handleMouseUp = (event: React.MouseEvent<HTMLDivElement>) => {
+    setIsSelectDragging(false)
+  }
+
   if (!data || !rows || !visibleAttributes.length) return null
 
   return (
     <div className={`collection-table collection-${collectionId}`}>
       <CollectionTableSpacer selectedFillColor={selectedFillColor}
-        onWhiteSpaceClick={handleWhiteSpaceClick} onDrop={handleNewCollectionDrop} />
-      <div className="collection-table-and-title" ref={setNodeRef} onClick={handleClick}>
+        onWhiteSpaceClick={clearCurrentSelection} onDrop={handleNewCollectionDrop} />
+      <div className="collection-table-and-title" ref={setNodeRef} onClick={handleClick} onMouseDown={handleMouseDown}
+           onMouseMove={handleMouseMove} onMouseUp={handleMouseUp}>
         <CollectionTitle onAddNewAttribute={handleAddNewAttribute} showCount={true} />
         <DataGrid ref={gridRef} className="rdg-light" data-testid="collection-table-grid" renderers={renderers}
           columns={columns} rows={rows} headerRowHeight={+styles.headerRowHeight} rowKeyGetter={rowKey}
diff --git a/v3/src/components/case-table/use-columns.tsx b/v3/src/components/case-table/use-columns.tsx
index 053630b24..bdd77a487 100644
--- a/v3/src/components/case-table/use-columns.tsx
+++ b/v3/src/components/case-table/use-columns.tsx
@@ -47,7 +47,7 @@ export const useColumns = ({ data, indexColumn }: IUseColumnsProps) => {
                 resizable: true,
                 headerCellClass: `codap-column-header`,
                 renderHeaderCell: ColumnHeader,
-                cellClass: "codap-data-cell",
+                cellClass: row => `codap-data-cell rowId-${row.__id__}`,
                 renderCell: AttributeValueCell,
                 editable: row => isCaseEditable(data, row.__id__),
                 renderEditCell: isEditable
diff --git a/v3/src/components/case-table/use-white-space-click.ts b/v3/src/components/case-table/use-white-space-click.ts
index 3a6ff6aaa..809d0caac 100644
--- a/v3/src/components/case-table/use-white-space-click.ts
+++ b/v3/src/components/case-table/use-white-space-click.ts
@@ -36,7 +36,7 @@ export function useWhiteSpaceClick({ gridRef }: IProps) {
     })
   }, [componentRef, data])
 
-  const handleWhiteSpaceClick = useCallback(() => {
+  const clearCurrentSelection = useCallback(() => {
     if (!wasFocusedTileRef.current && isFocusedTileRef.current) {
       // Focused the table, do nothing with the selection
       wasFocusedTileRef.current = true
@@ -45,5 +45,5 @@ export function useWhiteSpaceClick({ gridRef }: IProps) {
     clearCaseSelection()
   }, [clearCaseSelection])
 
-  return { handleWhiteSpaceClick }
+  return { clearCurrentSelection }
 }
diff --git a/v3/src/components/case-tile-common/index-menu-list.tsx b/v3/src/components/case-tile-common/index-menu-list.tsx
index 10c289d93..0c0135563 100644
--- a/v3/src/components/case-tile-common/index-menu-list.tsx
+++ b/v3/src/components/case-tile-common/index-menu-list.tsx
@@ -58,7 +58,7 @@ export const IndexMenuList = ({caseId, index}: IProps) => {
       itemKey: `DG.CaseTable.indexMenu.delete${deletableSelectedItems.length === 1 ? "Case" : "Cases" }`,
       isEnabled: () => deletableSelectedItems.length >= 1,
       handleClick: () => {
-        if (data?.selection.size) {
+        if (deletableSelectedItems && data) {
           removeCasesWithCustomUndoRedo(data, deletableSelectedItems)
         }
       }