diff --git a/backend/controllers/ExtractStudents.js b/backend/controllers/ExtractStudents.js
index 3a12c228..edd7246b 100644
--- a/backend/controllers/ExtractStudents.js
+++ b/backend/controllers/ExtractStudents.js
@@ -16,10 +16,26 @@ exports.extractStudents = async (req, res) => {
     for (let rowIndex = 2; rowIndex <= spreadsheet.rowCount; rowIndex++) {
       const row = spreadsheet.getRow(rowIndex);
       const dataRow = {}; 
-      columns.forEach((columnName, columnIndex) => {
-        dataRow[columnName] = row.getCell(columnIndex).value;
-      });
-      data.push(dataRow);
+
+      const matricula = row.getCell(1).value;
+      const nomeCompleto = row.getCell(2).value;
+      const ano = row.getCell(3).value;
+      const email = row.getCell(4).value;
+      
+      console.log(nomeCompleto.toString().length)
+      console.log((nomeCompleto.toString().length > 10 || nomeCompleto.toString().length < 50))
+      console.log((parseInt(ano) > 1 || parseInt(ano) <= 3))
+      console.log(( matricula.toString().length > 0 &&  matricula.toString().length <= 8))
+
+
+      if((nomeCompleto.toString().length > 10 || nomeCompleto.toString().length < 50) && (parseInt(ano) > 1 || parseInt(ano) <= 3) && ( matricula.toString().length > 0 &&  matricula.toString().length <= 8)){
+        columns.forEach((columnName, columnIndex) => {
+          dataRow[columnName] = row.getCell(columnIndex).value;
+        });
+        data.push(dataRow);
+      }else{
+        return res.status(400).json({ erro: 'Dados inválidos na linha ' + rowIndex });
+      }
     }
 
     data.forEach( async (student) => {
@@ -31,7 +47,7 @@ exports.extractStudents = async (req, res) => {
       }
     });
     
-    res.json({ mensagem: 'Arquivo Excel recebido e processado com sucesso!' });
+    res.status(201).json({ mensagem: 'Arquivo Excel recebido e processado com sucesso!' });
   } catch (erro) {
     console.error('Erro ao processar arquivo Excel:', erro);
     res.status(500).json({ erro: 'Erro ao processar arquivo Excel.' });
diff --git a/frontend/src/pages/Signin/index.js b/frontend/src/pages/Signin/index.js
index 131b37df..8e2441c1 100644
--- a/frontend/src/pages/Signin/index.js
+++ b/frontend/src/pages/Signin/index.js
@@ -36,17 +36,12 @@ const Signin = () => {
         let typeUser = isSuperUser()
         let user = userId()
         
-        if(typeUser == "true"){
+        if(typeUser === "true"){
           console.log("é adm ")
-          setTimeout(() => {
-            navigate('/home');
-          }, 2000);
+          navigate('/home');
         } else {
           console.log("é aluno ")
-
-          setTimeout(() => {
-            navigate('/home-student');
-          }, 2000);
+          navigate('/home-student');
 
         }