diff --git a/backend/src/controllers/error-helper.ts b/backend/src/controllers/error-helper.ts
index da627d72..dd4091c8 100644
--- a/backend/src/controllers/error-helper.ts
+++ b/backend/src/controllers/error-helper.ts
@@ -1,4 +1,4 @@
-import {BadRequestException} from "../exceptions/bad-request-exception";
+import { BadRequestException } from '../exceptions/bad-request-exception';
 
 /**
  * Checks for the presence of required fields and throws a BadRequestException
diff --git a/backend/src/controllers/students.ts b/backend/src/controllers/students.ts
index 46faef1d..aa3fd9ba 100644
--- a/backend/src/controllers/students.ts
+++ b/backend/src/controllers/students.ts
@@ -1,17 +1,20 @@
 import { Request, Response } from 'express';
 import {
     createClassJoinRequest,
-    createStudent, deleteClassJoinRequest,
+    createStudent,
+    deleteClassJoinRequest,
     deleteStudent,
-    getAllStudents, getJoinRequestsByStudent,
+    getAllStudents,
+    getJoinRequestsByStudent,
     getStudent,
     getStudentAssignments,
     getStudentClasses,
-    getStudentGroups, getStudentQuestions,
+    getStudentGroups,
+    getStudentQuestions,
     getStudentSubmissions,
 } from '../services/students.js';
 import { StudentDTO } from '../interfaces/student.js';
-import {requireFields} from "./error-helper.js";
+import { requireFields } from './error-helper.js';
 
 export async function getAllStudentsHandler(req: Request, res: Response): Promise<void> {
     const full = req.query.full === 'true';
@@ -128,7 +131,7 @@ export async function getStudentRequestHandler(req: Request, res: Response): Pro
     requireFields({ username });
 
     const requests = await getJoinRequestsByStudent(username);
-    res.status(201).json({ requests })
+    res.status(201).json({ requests });
 }
 
 export async function deleteClassJoinRequestHandler(req: Request, res: Response) {
@@ -139,5 +142,3 @@ export async function deleteClassJoinRequestHandler(req: Request, res: Response)
     await deleteClassJoinRequest(username, classId);
     res.sendStatus(204);
 }
-
-
diff --git a/backend/src/controllers/teachers.ts b/backend/src/controllers/teachers.ts
index 5c5a7324..ce328dac 100644
--- a/backend/src/controllers/teachers.ts
+++ b/backend/src/controllers/teachers.ts
@@ -3,16 +3,18 @@ import {
     createTeacher,
     deleteTeacher,
     getAllTeachers,
-    getClassesByTeacher, getJoinRequestsByClass,
+    getClassesByTeacher,
+    getJoinRequestsByClass,
     getStudentsByTeacher,
     getTeacher,
-    getTeacherQuestions, updateClassJoinRequestStatus
+    getTeacherQuestions,
+    updateClassJoinRequestStatus,
 } from '../services/teachers.js';
 import { ClassDTO } from '../interfaces/class.js';
 import { StudentDTO } from '../interfaces/student.js';
 import { QuestionDTO, QuestionId } from '../interfaces/question.js';
 import { TeacherDTO } from '../interfaces/teacher.js';
-import {requireFields} from "./error-helper.js";
+import { requireFields } from './error-helper.js';
 
 export async function getAllTeachersHandler(req: Request, res: Response): Promise<void> {
     const full = req.query.full === 'true';
diff --git a/backend/src/data/classes/class-join-request-repository.ts b/backend/src/data/classes/class-join-request-repository.ts
index b2d699ee..ce1dcec5 100644
--- a/backend/src/data/classes/class-join-request-repository.ts
+++ b/backend/src/data/classes/class-join-request-repository.ts
@@ -1,6 +1,6 @@
 import { DwengoEntityRepository } from '../dwengo-entity-repository.js';
 import { Class } from '../../entities/classes/class.entity.js';
-import {ClassJoinRequest, ClassJoinRequestStatus} from '../../entities/classes/class-join-request.entity.js';
+import { ClassJoinRequest, ClassJoinRequestStatus } from '../../entities/classes/class-join-request.entity.js';
 import { Student } from '../../entities/users/student.entity.js';
 
 export class ClassJoinRequestRepository extends DwengoEntityRepository<ClassJoinRequest> {
@@ -8,7 +8,7 @@ export class ClassJoinRequestRepository extends DwengoEntityRepository<ClassJoin
         return this.findAll({ where: { requester: requester } });
     }
     public findAllOpenRequestsTo(clazz: Class): Promise<ClassJoinRequest[]> {
-        return this.findAll({ where: { class: clazz, status: ClassJoinRequestStatus.Open, } }); // TODO check if works like this
+        return this.findAll({ where: { class: clazz, status: ClassJoinRequestStatus.Open } }); // TODO check if works like this
     }
     public findByStudentAndClass(requester: Student, clazz: Class): Promise<ClassJoinRequest | null> {
         return this.findOne({ requester, class: clazz });
diff --git a/backend/src/interfaces/student-request.ts b/backend/src/interfaces/student-request.ts
index 6ced158d..bde840c9 100644
--- a/backend/src/interfaces/student-request.ts
+++ b/backend/src/interfaces/student-request.ts
@@ -1,13 +1,13 @@
-import {mapToStudentDTO, StudentDTO} from "./student";
-import {ClassJoinRequest, ClassJoinRequestStatus} from "../entities/classes/class-join-request.entity";
-import {getClassJoinRequestRepository} from "../data/repositories";
-import {Student} from "../entities/users/student.entity";
-import {Class} from "../entities/classes/class.entity";
+import { mapToStudentDTO, StudentDTO } from './student';
+import { ClassJoinRequest, ClassJoinRequestStatus } from '../entities/classes/class-join-request.entity';
+import { getClassJoinRequestRepository } from '../data/repositories';
+import { Student } from '../entities/users/student.entity';
+import { Class } from '../entities/classes/class.entity';
 
 export interface StudentRequestDTO {
     requester: StudentDTO;
     class: string;
-    status: ClassJoinRequestStatus
+    status: ClassJoinRequestStatus;
 }
 
 export function mapToStudentRequestDTO(request: ClassJoinRequest): StudentRequestDTO {
diff --git a/backend/src/routes/student-join-requests.ts b/backend/src/routes/student-join-requests.ts
index 73532347..de2d522b 100644
--- a/backend/src/routes/student-join-requests.ts
+++ b/backend/src/routes/student-join-requests.ts
@@ -1,8 +1,5 @@
-import express from "express";
-import {
-    createStudentRequestHandler, deleteClassJoinRequestHandler,
-    getStudentRequestHandler,
-} from "../controllers/students";
+import express from 'express';
+import { createStudentRequestHandler, deleteClassJoinRequestHandler, getStudentRequestHandler } from '../controllers/students';
 
 const router = express.Router({ mergeParams: true });
 
diff --git a/backend/src/routes/students.ts b/backend/src/routes/students.ts
index b2d0fc93..0f5d5349 100644
--- a/backend/src/routes/students.ts
+++ b/backend/src/routes/students.ts
@@ -10,7 +10,7 @@ import {
     getStudentQuestionsHandler,
     getStudentSubmissionsHandler,
 } from '../controllers/students.js';
-import joinRequestRouter from './student-join-requests.js'
+import joinRequestRouter from './student-join-requests.js';
 
 const router = express.Router();
 
@@ -39,6 +39,6 @@ router.get('/:username/groups', getStudentGroupsHandler);
 // A list of questions a user has created
 router.get('/:username/questions', getStudentQuestionsHandler);
 
-router.use('/:username/joinRequests', joinRequestRouter)
+router.use('/:username/joinRequests', joinRequestRouter);
 
 export default router;
diff --git a/backend/src/routes/teachers.ts b/backend/src/routes/teachers.ts
index 058bc0a3..746e0d16 100644
--- a/backend/src/routes/teachers.ts
+++ b/backend/src/routes/teachers.ts
@@ -2,11 +2,13 @@ import express from 'express';
 import {
     createTeacherHandler,
     deleteTeacherHandler,
-    getAllTeachersHandler, getStudentJoinRequestHandler,
+    getAllTeachersHandler,
+    getStudentJoinRequestHandler,
     getTeacherClassHandler,
     getTeacherHandler,
     getTeacherQuestionHandler,
-    getTeacherStudentHandler, updateStudentJoinRequestHandler,
+    getTeacherStudentHandler,
+    updateStudentJoinRequestHandler,
 } from '../controllers/teachers.js';
 const router = express.Router();
 
diff --git a/backend/src/services/classes.ts b/backend/src/services/classes.ts
index 6581cb93..f14a3cb5 100644
--- a/backend/src/services/classes.ts
+++ b/backend/src/services/classes.ts
@@ -3,8 +3,8 @@ import { ClassDTO, mapToClassDTO } from '../interfaces/class.js';
 import { mapToStudentDTO, StudentDTO } from '../interfaces/student.js';
 import { mapToTeacherInvitationDTO, mapToTeacherInvitationDTOIds, TeacherInvitationDTO } from '../interfaces/teacher-invitation.js';
 import { getLogger } from '../logging/initalize.js';
-import {NotFoundException} from "../exceptions/not-found-exception";
-import {Class} from "../entities/classes/class.entity";
+import { NotFoundException } from '../exceptions/not-found-exception';
+import { Class } from '../entities/classes/class.entity';
 
 const logger = getLogger();
 
@@ -13,7 +13,7 @@ export async function fetchClass(classId: string): Promise<Class> {
     const cls = await classRepository.findById(classId);
 
     if (!cls) {
-        throw new NotFoundException("Class with id not found");
+        throw new NotFoundException('Class with id not found');
     }
 
     return cls;
diff --git a/backend/src/services/students.ts b/backend/src/services/students.ts
index 37f54d78..e043ceee 100644
--- a/backend/src/services/students.ts
+++ b/backend/src/services/students.ts
@@ -4,7 +4,7 @@ import {
     getGroupRepository,
     getQuestionRepository,
     getStudentRepository,
-    getSubmissionRepository
+    getSubmissionRepository,
 } from '../data/repositories.js';
 import { AssignmentDTO } from '../interfaces/assignment.js';
 import { ClassDTO, mapToClassDTO } from '../interfaces/class.js';
@@ -13,17 +13,18 @@ import { mapToStudent, mapToStudentDTO, StudentDTO } from '../interfaces/student
 import { mapToSubmissionDTO, mapToSubmissionDTOId, SubmissionDTO, SubmissionDTOId } from '../interfaces/submission.js';
 import { getAllAssignments } from './assignments.js';
 import { mapToQuestionDTO, mapToQuestionId, QuestionDTO, QuestionId } from '../interfaces/question.js';
-import {mapToStudentRequest, mapToStudentRequestDTO} from "../interfaces/student-request.js";
-import {Student} from "../entities/users/student.entity.js";
-import {NotFoundException} from "../exceptions/not-found-exception.js";
-import {fetchClass} from "./classes.js";
+import { mapToStudentRequest, mapToStudentRequestDTO } from '../interfaces/student-request.js';
+import { Student } from '../entities/users/student.entity.js';
+import { NotFoundException } from '../exceptions/not-found-exception.js';
+import { fetchClass } from './classes.js';
 
 export async function getAllStudents(full: boolean): Promise<StudentDTO[] | string[]> {
     const studentRepository = getStudentRepository();
     const users = await studentRepository.findAll();
 
-    if (full)
-        {return users.map(mapToStudentDTO);}
+    if (full) {
+        return users.map(mapToStudentDTO);
+    }
 
     return users.map((user) => user.username);
 }
@@ -33,7 +34,7 @@ export async function fetchStudent(username: string): Promise<Student> {
     const user = await studentRepository.findByUsername(username);
 
     if (!user) {
-        throw new NotFoundException("Student with username not found");
+        throw new NotFoundException('Student with username not found');
     }
 
     return user;
@@ -115,8 +116,9 @@ export async function getStudentQuestions(username: string, full: boolean): Prom
 
     const questionsDTO = questions.map(mapToQuestionDTO);
 
-    if (full)
-        {return questionsDTO;}
+    if (full) {
+        return questionsDTO;
+    }
 
     return questionsDTO.map(mapToQuestionId);
 }
@@ -146,7 +148,6 @@ export async function deleteClassJoinRequest(studentUsername: string, classId: s
     const student = await fetchStudent(studentUsername);
     const cls = await fetchClass(classId);
 
-
     const request = await requestRepo.findByStudentAndClass(student, cls);
 
     if (!request) {
diff --git a/backend/src/services/teachers.ts b/backend/src/services/teachers.ts
index f32a7a56..11b27b70 100644
--- a/backend/src/services/teachers.ts
+++ b/backend/src/services/teachers.ts
@@ -6,24 +6,24 @@ import {
     getTeacherRepository,
 } from '../data/repositories.js';
 import { ClassDTO, mapToClassDTO } from '../interfaces/class.js';
-import {mapToQuestionDTO, mapToQuestionId, QuestionDTO, QuestionId} from '../interfaces/question.js';
+import { mapToQuestionDTO, mapToQuestionId, QuestionDTO, QuestionId } from '../interfaces/question.js';
 import { mapToTeacher, mapToTeacherDTO, TeacherDTO } from '../interfaces/teacher.js';
-import {Teacher} from "../entities/users/teacher.entity.js";
-import {fetchStudent} from "./students.js";
-import {ClassJoinRequest, ClassJoinRequestStatus} from "../entities/classes/class-join-request.entity.js";
-import {mapToStudentRequestDTO, StudentRequestDTO} from "../interfaces/student-request.js";
-import {TeacherRepository} from "../data/users/teacher-repository.js";
-import {ClassRepository} from "../data/classes/class-repository.js";
-import {Class} from "../entities/classes/class.entity.js";
-import {StudentDTO} from "../interfaces/student.js";
-import {LearningObjectRepository} from "../data/content/learning-object-repository.js";
-import {LearningObject} from "../entities/content/learning-object.entity.js";
-import {QuestionRepository} from "../data/questions/question-repository.js";
-import {Question} from "../entities/questions/question.entity.js";
-import {ClassJoinRequestRepository} from "../data/classes/class-join-request-repository.js";
-import {Student} from "../entities/users/student.entity.js";
-import {NotFoundException} from "../exceptions/not-found-exception.js";
-import {getClassStudents} from "./classes.js";
+import { Teacher } from '../entities/users/teacher.entity.js';
+import { fetchStudent } from './students.js';
+import { ClassJoinRequest, ClassJoinRequestStatus } from '../entities/classes/class-join-request.entity.js';
+import { mapToStudentRequestDTO, StudentRequestDTO } from '../interfaces/student-request.js';
+import { TeacherRepository } from '../data/users/teacher-repository.js';
+import { ClassRepository } from '../data/classes/class-repository.js';
+import { Class } from '../entities/classes/class.entity.js';
+import { StudentDTO } from '../interfaces/student.js';
+import { LearningObjectRepository } from '../data/content/learning-object-repository.js';
+import { LearningObject } from '../entities/content/learning-object.entity.js';
+import { QuestionRepository } from '../data/questions/question-repository.js';
+import { Question } from '../entities/questions/question.entity.js';
+import { ClassJoinRequestRepository } from '../data/classes/class-join-request-repository.js';
+import { Student } from '../entities/users/student.entity.js';
+import { NotFoundException } from '../exceptions/not-found-exception.js';
+import { getClassStudents } from './classes.js';
 
 export async function getAllTeachers(full: boolean): Promise<TeacherDTO[] | string[]> {
     const teacherRepository: TeacherRepository = getTeacherRepository();
@@ -40,7 +40,7 @@ export async function fetchTeacher(username: string): Promise<Teacher> {
     const user: Teacher | null = await teacherRepository.findByUsername(username);
 
     if (!user) {
-        throw new NotFoundException("Teacher with username not found");
+        throw new NotFoundException('Teacher with username not found');
     }
 
     return user;
@@ -86,7 +86,7 @@ export async function getClassesByTeacher(username: string, full: boolean): Prom
 export async function getStudentsByTeacher(username: string, full: boolean) {
     const classes: ClassDTO[] = await fetchClassesByTeacher(username);
 
-    if (!classes || classes.length === 0){
+    if (!classes || classes.length === 0) {
         return [];
     }
 
@@ -109,7 +109,7 @@ export async function getTeacherQuestions(username: string, full: boolean): Prom
     // Console.log(learningObjects)
     // TODO returns empty
 
-    if (!learningObjects || learningObjects.length === 0){
+    if (!learningObjects || learningObjects.length === 0) {
         return [];
     }
 
@@ -125,12 +125,12 @@ export async function getTeacherQuestions(username: string, full: boolean): Prom
     return questionsDTO.map(mapToQuestionId);
 }
 
-export async function getJoinRequestsByClass( classId: string ): Promise<StudentRequestDTO[]> {
+export async function getJoinRequestsByClass(classId: string): Promise<StudentRequestDTO[]> {
     const classRepository: ClassRepository = getClassRepository();
     const cls: Class | null = await classRepository.findById(classId);
 
     if (!cls) {
-        throw new NotFoundException("Class with id not found");
+        throw new NotFoundException('Class with id not found');
     }
 
     const requestRepo: ClassJoinRequestRepository = getClassJoinRequestRepository();
@@ -138,7 +138,7 @@ export async function getJoinRequestsByClass( classId: string ): Promise<Student
     return requests.map(mapToStudentRequestDTO);
 }
 
-export async function updateClassJoinRequestStatus( studentUsername: string, classId: string, accepted: boolean = true): Promise<void> {
+export async function updateClassJoinRequestStatus(studentUsername: string, classId: string, accepted: boolean = true): Promise<void> {
     const requestRepo: ClassJoinRequestRepository = getClassJoinRequestRepository();
     const classRepo: ClassRepository = getClassRepository();
 
diff --git a/backend/tests/controllers/students.test.ts b/backend/tests/controllers/students.test.ts
index 57c5da96..fae8a479 100644
--- a/backend/tests/controllers/students.test.ts
+++ b/backend/tests/controllers/students.test.ts
@@ -12,14 +12,14 @@ import {
     getStudentQuestionsHandler,
     createStudentRequestHandler,
     getStudentRequestHandler,
-    deleteClassJoinRequestHandler
+    deleteClassJoinRequestHandler,
 } from '../../src/controllers/students.js';
-import {TEST_STUDENTS} from "../test_assets/users/students.testdata.js";
-import {NotFoundException} from "../../src/exceptions/not-found-exception.js";
-import {BadRequestException} from "../../src/exceptions/bad-request-exception.js";
-import {ConflictException} from "../../src/exceptions/conflict-exception.js";
-import {EntityAlreadyExistsException} from "../../src/exceptions/entity-already-exists-exception.js";
-import {StudentDTO} from "../../src/interfaces/student.js";
+import { TEST_STUDENTS } from '../test_assets/users/students.testdata.js';
+import { NotFoundException } from '../../src/exceptions/not-found-exception.js';
+import { BadRequestException } from '../../src/exceptions/bad-request-exception.js';
+import { ConflictException } from '../../src/exceptions/conflict-exception.js';
+import { EntityAlreadyExistsException } from '../../src/exceptions/entity-already-exists-exception.js';
+import { StudentDTO } from '../../src/interfaces/student.js';
 
 describe('Student controllers', () => {
     let req: Partial<Request>;
@@ -45,7 +45,7 @@ describe('Student controllers', () => {
     });
 
     it('Get student', async () => {
-        req = { params: { username: 'DireStraits' }};
+        req = { params: { username: 'DireStraits' } };
 
         await getStudentHandler(req as Request, res as Response);
 
@@ -55,17 +55,13 @@ describe('Student controllers', () => {
     it('Student not found', async () => {
         req = { params: { username: 'doesnotexist' } };
 
-        await expect(() => getStudentHandler(req as Request, res as Response))
-            .rejects
-            .toThrow(NotFoundException);
+        await expect(() => getStudentHandler(req as Request, res as Response)).rejects.toThrow(NotFoundException);
     });
 
     it('No username', async () => {
         req = { params: {} };
 
-        await expect(() => getStudentHandler(req as Request, res as Response))
-            .rejects
-            .toThrowError(BadRequestException);
+        await expect(() => getStudentHandler(req as Request, res as Response)).rejects.toThrowError(BadRequestException);
     });
 
     it('Create and delete student', async () => {
@@ -73,8 +69,8 @@ describe('Student controllers', () => {
             body: {
                 username: 'coolstudent',
                 firstName: 'New',
-                lastName: 'Student'
-            }
+                lastName: 'Student',
+            },
         };
 
         await createStudentHandler(req as Request, res as Response);
@@ -88,27 +84,22 @@ describe('Student controllers', () => {
         expect(sendStatusMock).toHaveBeenCalledWith(200);
     });
 
-
     it('Create duplicate student', async () => {
         req = {
             body: {
                 username: 'DireStraits',
                 firstName: 'dupe',
-                lastName: 'dupe'
-            }
+                lastName: 'dupe',
+            },
         };
 
-        await expect(() => createStudentHandler(req as Request, res as Response))
-            .rejects
-            .toThrowError(EntityAlreadyExistsException);
+        await expect(() => createStudentHandler(req as Request, res as Response)).rejects.toThrowError(EntityAlreadyExistsException);
     });
 
     it('Create student no body', async () => {
         req = { body: {} };
 
-        await expect(() => createStudentHandler(req as Request, res as Response))
-            .rejects
-            .toThrowError(BadRequestException);
+        await expect(() => createStudentHandler(req as Request, res as Response)).rejects.toThrowError(BadRequestException);
     });
 
     it('Student list', async () => {
@@ -133,7 +124,6 @@ describe('Student controllers', () => {
 
         await getStudentClassesHandler(req as Request, res as Response);
 
-
         expect(jsonMock).toHaveBeenCalledWith(expect.objectContaining({ classes: expect.anything() }));
 
         const result = jsonMock.mock.lastCall?.[0];
@@ -176,9 +166,7 @@ describe('Student controllers', () => {
     it('Deleting non-existent student', async () => {
         req = { params: { username: 'doesnotexist' } };
 
-        await expect(() => deleteStudentHandler(req as Request, res as Response))
-            .rejects
-            .toThrow(NotFoundException);
+        await expect(() => deleteStudentHandler(req as Request, res as Response)).rejects.toThrow(NotFoundException);
     });
 
     it('Get join requests by student', async () => {
@@ -203,7 +191,7 @@ describe('Student controllers', () => {
     it('Create join request', async () => {
         req = {
             params: { username: 'Noordkaap' },
-            body: { classId: 'id02' }
+            body: { classId: 'id02' },
         };
 
         await createStudentRequestHandler(req as Request, res as Response);
@@ -214,15 +202,12 @@ describe('Student controllers', () => {
     it('Create join request duplicate', async () => {
         req = {
             params: { username: 'Tool' },
-            body: { classId: 'id02' }
+            body: { classId: 'id02' },
         };
 
-        await expect(() => createStudentRequestHandler(req as Request, res as Response))
-            .rejects
-            .toThrow(ConflictException);
+        await expect(() => createStudentRequestHandler(req as Request, res as Response)).rejects.toThrow(ConflictException);
     });
 
-
     it('Delete join request', async () => {
         req = {
             params: { username: 'Noordkaap', classId: 'id02' },
@@ -232,9 +217,6 @@ describe('Student controllers', () => {
 
         expect(sendStatusMock).toHaveBeenCalledWith(204);
 
-        await expect(() => deleteClassJoinRequestHandler(req as Request, res as Response))
-            .rejects
-            .toThrow(NotFoundException);
+        await expect(() => deleteClassJoinRequestHandler(req as Request, res as Response)).rejects.toThrow(NotFoundException);
     });
-
 });
diff --git a/backend/tests/controllers/teachers.test.ts b/backend/tests/controllers/teachers.test.ts
index 78d67318..9fa3e501 100644
--- a/backend/tests/controllers/teachers.test.ts
+++ b/backend/tests/controllers/teachers.test.ts
@@ -1,17 +1,22 @@
-import {beforeAll, beforeEach, describe, expect, it, Mock, vi} from "vitest";
-import {Request, Response} from "express";
-import {setupTestApp} from "../setup-tests.js";
-import {NotFoundException} from "../../src/exceptions/not-found-exception.js";
+import { beforeAll, beforeEach, describe, expect, it, Mock, vi } from 'vitest';
+import { Request, Response } from 'express';
+import { setupTestApp } from '../setup-tests.js';
+import { NotFoundException } from '../../src/exceptions/not-found-exception.js';
 import {
     createTeacherHandler,
     deleteTeacherHandler,
-    getAllTeachersHandler, getStudentJoinRequestHandler, getTeacherClassHandler,
-    getTeacherHandler, getTeacherQuestionHandler, getTeacherStudentHandler, updateStudentJoinRequestHandler
-} from "../../src/controllers/teachers.js";
-import {BadRequestException} from "../../src/exceptions/bad-request-exception.js";
-import {EntityAlreadyExistsException} from "../../src/exceptions/entity-already-exists-exception.js";
-import {getStudentRequestHandler} from "../../src/controllers/students.js";
-import {TeacherDTO} from "../../src/interfaces/teacher.js";
+    getAllTeachersHandler,
+    getStudentJoinRequestHandler,
+    getTeacherClassHandler,
+    getTeacherHandler,
+    getTeacherQuestionHandler,
+    getTeacherStudentHandler,
+    updateStudentJoinRequestHandler,
+} from '../../src/controllers/teachers.js';
+import { BadRequestException } from '../../src/exceptions/bad-request-exception.js';
+import { EntityAlreadyExistsException } from '../../src/exceptions/entity-already-exists-exception.js';
+import { getStudentRequestHandler } from '../../src/controllers/students.js';
+import { TeacherDTO } from '../../src/interfaces/teacher.js';
 
 describe('Teacher controllers', () => {
     let req: Partial<Request>;
@@ -37,7 +42,7 @@ describe('Teacher controllers', () => {
     });
 
     it('Get teacher', async () => {
-        req = { params: { username: 'FooFighters' }};
+        req = { params: { username: 'FooFighters' } };
 
         await getTeacherHandler(req as Request, res as Response);
 
@@ -45,19 +50,15 @@ describe('Teacher controllers', () => {
     });
 
     it('Teacher not found', async () => {
-        req = {params: {username: 'doesnotexist'}};
+        req = { params: { username: 'doesnotexist' } };
 
-        await expect(() => getTeacherHandler(req as Request, res as Response))
-            .rejects
-            .toThrow(NotFoundException);
+        await expect(() => getTeacherHandler(req as Request, res as Response)).rejects.toThrow(NotFoundException);
     });
 
     it('No username', async () => {
         req = { params: {} };
 
-        await expect(() => getTeacherHandler(req as Request, res as Response))
-            .rejects
-            .toThrowError(BadRequestException);
+        await expect(() => getTeacherHandler(req as Request, res as Response)).rejects.toThrowError(BadRequestException);
     });
 
     it('Create and delete teacher', async () => {
@@ -65,8 +66,8 @@ describe('Teacher controllers', () => {
             body: {
                 username: 'coolteacher',
                 firstName: 'New',
-                lastName: 'Teacher'
-            }
+                lastName: 'Teacher',
+            },
         };
 
         await createTeacherHandler(req as Request, res as Response);
@@ -86,20 +87,16 @@ describe('Teacher controllers', () => {
                 username: 'FooFighters',
                 firstName: 'Dave',
                 lastName: 'Grohl',
-            }
+            },
         };
 
-        await expect(() => createTeacherHandler(req as Request, res as Response))
-            .rejects
-            .toThrowError(EntityAlreadyExistsException);
+        await expect(() => createTeacherHandler(req as Request, res as Response)).rejects.toThrowError(EntityAlreadyExistsException);
     });
 
     it('Create teacher no body', async () => {
         req = { body: {} };
 
-        await expect(() => createTeacherHandler(req as Request, res as Response))
-            .rejects
-            .toThrowError(BadRequestException);
+        await expect(() => createTeacherHandler(req as Request, res as Response)).rejects.toThrowError(BadRequestException);
     });
 
     it('Teacher list', async () => {
@@ -120,12 +117,9 @@ describe('Teacher controllers', () => {
     it('Deleting non-existent student', async () => {
         req = { params: { username: 'doesnotexist' } };
 
-        await expect(() => deleteTeacherHandler(req as Request, res as Response))
-            .rejects
-            .toThrow(NotFoundException);
+        await expect(() => deleteTeacherHandler(req as Request, res as Response)).rejects.toThrow(NotFoundException);
     });
 
-
     it('Get teacher classes', async () => {
         req = {
             params: { username: 'FooFighters' },
@@ -196,7 +190,7 @@ describe('Teacher controllers', () => {
         req = {
             query: { username: 'LimpBizkit', studentUsername: 'PinkFloyd' },
             params: { classId: 'id02' },
-            body: { accepted: 'true' }
+            body: { accepted: 'true' },
         };
 
         await updateStudentJoinRequestHandler(req as Request, res as Response);
@@ -209,11 +203,7 @@ describe('Teacher controllers', () => {
 
         await getStudentRequestHandler(req as Request, res as Response);
 
-        const status: boolean = jsonMock.mock.lastCall?.[0].requests[0].status
+        const status: boolean = jsonMock.mock.lastCall?.[0].requests[0].status;
         expect(status).toBeTruthy;
     });
-
-
-
-
 });
diff --git a/backend/tests/test_assets/users/students.testdata.ts b/backend/tests/test_assets/users/students.testdata.ts
index b86ef0d0..8bb3213b 100644
--- a/backend/tests/test_assets/users/students.testdata.ts
+++ b/backend/tests/test_assets/users/students.testdata.ts
@@ -15,6 +15,5 @@ export const TEST_STUDENTS = [
 
 // 🏗️ Functie die ORM entities maakt uit de data array
 export function makeTestStudents(em: EntityManager<IDatabaseDriver<Connection>>): Student[] {
-    return TEST_STUDENTS.map(data => em.create(Student, data));
+    return TEST_STUDENTS.map((data) => em.create(Student, data));
 }
-
diff --git a/frontend/src/controllers/teachers.ts b/frontend/src/controllers/teachers.ts
index 23b1968b..cdbacae7 100644
--- a/frontend/src/controllers/teachers.ts
+++ b/frontend/src/controllers/teachers.ts
@@ -33,12 +33,12 @@ export class TeacherController extends BaseController {
         return this.get<{ questions: any[] }>(`/${username}/questions`, { full });
     }
 
-    getStudentJoinRequests(username: string, classId: string){
+    getStudentJoinRequests(username: string, classId: string) {
         return this.get<{ joinRequests: any[] }>(`/${username}/joinRequests/${classId}`);
     }
 
-    updateStudentJoinRequest(teacherUsername: string, classId: string, studentUsername: string, accepted: boolean){
-        return this.put(`/${teacherUsername}/joinRequests/${classId}/${studentUsername}`, accepted)
+    updateStudentJoinRequest(teacherUsername: string, classId: string, studentUsername: string, accepted: boolean) {
+        return this.put(`/${teacherUsername}/joinRequests/${classId}/${studentUsername}`, accepted);
     }
 
     // GetInvitations(id: string) {return this.get<{ invitations: string[] }>(`/${id}/invitations`);}
diff --git a/frontend/src/queries/students.ts b/frontend/src/queries/students.ts
index aaf05544..f94d85ed 100644
--- a/frontend/src/queries/students.ts
+++ b/frontend/src/queries/students.ts
@@ -1,21 +1,20 @@
 import { computed, toValue } from "vue";
 import type { MaybeRefOrGetter } from "vue";
-import {useMutation, useQuery, useQueryClient} from "@tanstack/vue-query";
-import {StudentController} from "@/controllers/students.ts";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/vue-query";
+import { StudentController } from "@/controllers/students.ts";
 
 const studentController = new StudentController();
 
 /** 🔑 Query keys */
-const STUDENTS_QUERY_KEY = (full: boolean) => ['students', full];
-const STUDENT_QUERY_KEY = (username: string) => ['student', username];
-const STUDENT_CLASSES_QUERY_KEY = (username: string, full: boolean) => ['student-classes', username, full];
-const STUDENT_ASSIGNMENTS_QUERY_KEY = (username: string, full: boolean) => ['student-assignments', username, full];
-const STUDENT_GROUPS_QUERY_KEY = (username: string, full: boolean) => ['student-groups', username, full];
-const STUDENT_SUBMISSIONS_QUERY_KEY = (username: string) => ['student-submissions', username];
-const STUDENT_QUESTIONS_QUERY_KEY = (username: string, full: boolean) => ['student-questions', username, full];
+const STUDENTS_QUERY_KEY = (full: boolean) => ["students", full];
+const STUDENT_QUERY_KEY = (username: string) => ["student", username];
+const STUDENT_CLASSES_QUERY_KEY = (username: string, full: boolean) => ["student-classes", username, full];
+const STUDENT_ASSIGNMENTS_QUERY_KEY = (username: string, full: boolean) => ["student-assignments", username, full];
+const STUDENT_GROUPS_QUERY_KEY = (username: string, full: boolean) => ["student-groups", username, full];
+const STUDENT_SUBMISSIONS_QUERY_KEY = (username: string) => ["student-submissions", username];
+const STUDENT_QUESTIONS_QUERY_KEY = (username: string, full: boolean) => ["student-questions", username, full];
 const STUDENT_JOIN_REQUESTS_QUERY_KEY = (username: string) => ["student-join-requests", username];
 
-
 export function useStudentsQuery(full: MaybeRefOrGetter<boolean> = true) {
     return useQuery({
         queryKey: computed(() => STUDENTS_QUERY_KEY(toValue(full))),
@@ -31,7 +30,10 @@ export function useStudentQuery(username: MaybeRefOrGetter<string | undefined>)
     });
 }
 
-export function useStudentClassesQuery(username: MaybeRefOrGetter<string | undefined>, full: MaybeRefOrGetter<boolean> = true) {
+export function useStudentClassesQuery(
+    username: MaybeRefOrGetter<string | undefined>,
+    full: MaybeRefOrGetter<boolean> = true,
+) {
     return useQuery({
         queryKey: computed(() => STUDENT_CLASSES_QUERY_KEY(toValue(username)!, toValue(full))),
         queryFn: () => studentController.getClasses(toValue(username)!, toValue(full)),
@@ -39,7 +41,10 @@ export function useStudentClassesQuery(username: MaybeRefOrGetter<string | undef
     });
 }
 
-export function useStudentAssignmentsQuery(username: MaybeRefOrGetter<string | undefined>, full: MaybeRefOrGetter<boolean> = true) {
+export function useStudentAssignmentsQuery(
+    username: MaybeRefOrGetter<string | undefined>,
+    full: MaybeRefOrGetter<boolean> = true,
+) {
     return useQuery({
         queryKey: computed(() => STUDENT_ASSIGNMENTS_QUERY_KEY(toValue(username)!, toValue(full))),
         queryFn: () => studentController.getAssignments(toValue(username)!, toValue(full)),
@@ -47,7 +52,10 @@ export function useStudentAssignmentsQuery(username: MaybeRefOrGetter<string | u
     });
 }
 
-export function useStudentGroupsQuery(username: MaybeRefOrGetter<string | undefined>, full: MaybeRefOrGetter<boolean> = true) {
+export function useStudentGroupsQuery(
+    username: MaybeRefOrGetter<string | undefined>,
+    full: MaybeRefOrGetter<boolean> = true,
+) {
     return useQuery({
         queryKey: computed(() => STUDENT_GROUPS_QUERY_KEY(toValue(username)!, toValue(full))),
         queryFn: () => studentController.getGroups(toValue(username)!, toValue(full)),
@@ -63,7 +71,10 @@ export function useStudentSubmissionsQuery(username: MaybeRefOrGetter<string | u
     });
 }
 
-export function useStudentQuestionsQuery(username: MaybeRefOrGetter<string | undefined>, full: MaybeRefOrGetter<boolean> = true) {
+export function useStudentQuestionsQuery(
+    username: MaybeRefOrGetter<string | undefined>,
+    full: MaybeRefOrGetter<boolean> = true,
+) {
     return useQuery({
         queryKey: computed(() => STUDENT_QUESTIONS_QUERY_KEY(toValue(username)!, toValue(full))),
         queryFn: () => studentController.getQuestions(toValue(username)!, toValue(full)),
@@ -77,7 +88,7 @@ export function useCreateStudentMutation() {
     return useMutation({
         mutationFn: (data: any) => studentController.createStudent(data),
         onSuccess: () => {
-            await queryClient.invalidateQueries({ queryKey: ['students'] });
+            await queryClient.invalidateQueries({ queryKey: ["students"] });
         },
         onError: (err) => {
             alert("Create student failed:", err);
@@ -94,7 +105,7 @@ export function useDeleteStudentMutation() {
     return useMutation({
         mutationFn: (username: string) => studentController.deleteStudent(username),
         onSuccess: () => {
-            await queryClient.invalidateQueries({ queryKey: ['students'] });
+            await queryClient.invalidateQueries({ queryKey: ["students"] });
         },
         onError: (err) => {
             alert("Delete student failed:", err);
@@ -145,7 +156,3 @@ export function useDeleteJoinRequestMutation() {
         },
     });
 }
-
-
-
-
diff --git a/frontend/src/queries/teachers.ts b/frontend/src/queries/teachers.ts
index 2df0eeec..f8ba0f6a 100644
--- a/frontend/src/queries/teachers.ts
+++ b/frontend/src/queries/teachers.ts
@@ -1,7 +1,7 @@
 import { computed, toValue } from "vue";
 import type { MaybeRefOrGetter } from "vue";
 import { useQuery, useMutation, useQueryClient } from "@tanstack/vue-query";
-import {TeacherController} from "@/controllers/teachers.ts";
+import { TeacherController } from "@/controllers/teachers.ts";
 
 const teacherController = new TeacherController();
 
@@ -28,7 +28,10 @@ export function useTeacherQuery(username: MaybeRefOrGetter<string | undefined>)
     });
 }
 
-export function useTeacherClassesQuery(username: MaybeRefOrGetter<string | undefined>, full: MaybeRefOrGetter<boolean> = false) {
+export function useTeacherClassesQuery(
+    username: MaybeRefOrGetter<string | undefined>,
+    full: MaybeRefOrGetter<boolean> = false,
+) {
     return useQuery({
         queryKey: computed(() => TEACHER_CLASSES_QUERY_KEY(toValue(username)!, toValue(full))),
         queryFn: () => teacherController.getClasses(toValue(username)!, toValue(full)),
@@ -36,7 +39,10 @@ export function useTeacherClassesQuery(username: MaybeRefOrGetter<string | undef
     });
 }
 
-export function useTeacherStudentsQuery(username: MaybeRefOrGetter<string | undefined>, full: MaybeRefOrGetter<boolean> = false) {
+export function useTeacherStudentsQuery(
+    username: MaybeRefOrGetter<string | undefined>,
+    full: MaybeRefOrGetter<boolean> = false,
+) {
     return useQuery({
         queryKey: computed(() => TEACHER_STUDENTS_QUERY_KEY(toValue(username)!, toValue(full))),
         queryFn: () => teacherController.getStudents(toValue(username)!, toValue(full)),
@@ -44,7 +50,10 @@ export function useTeacherStudentsQuery(username: MaybeRefOrGetter<string | unde
     });
 }
 
-export function useTeacherQuestionsQuery(username: MaybeRefOrGetter<string | undefined>, full: MaybeRefOrGetter<boolean> = false) {
+export function useTeacherQuestionsQuery(
+    username: MaybeRefOrGetter<string | undefined>,
+    full: MaybeRefOrGetter<boolean> = false,
+) {
     return useQuery({
         queryKey: computed(() => TEACHER_QUESTIONS_QUERY_KEY(toValue(username)!, toValue(full))),
         queryFn: () => teacherController.getQuestions(toValue(username)!, toValue(full)),
@@ -52,7 +61,10 @@ export function useTeacherQuestionsQuery(username: MaybeRefOrGetter<string | und
     });
 }
 
-export function useTeacherJoinRequestsQuery(username: MaybeRefOrGetter<string | undefined>, classId: MaybeRefOrGetter<string | undefined>) {
+export function useTeacherJoinRequestsQuery(
+    username: MaybeRefOrGetter<string | undefined>,
+    classId: MaybeRefOrGetter<string | undefined>,
+) {
     return useQuery({
         queryKey: computed(() => JOIN_REQUESTS_QUERY_KEY(toValue(username)!, toValue(classId)!)),
         queryFn: () => teacherController.getStudentJoinRequests(toValue(username)!, toValue(classId)!),
@@ -66,7 +78,7 @@ export function useCreateTeacherMutation() {
     return useMutation({
         mutationFn: (data: any) => teacherController.createTeacher(data),
         onSuccess: () => {
-            await queryClient.invalidateQueries({ queryKey: ['teachers'] });
+            await queryClient.invalidateQueries({ queryKey: ["teachers"] });
         },
         onError: (err) => {
             alert("Create teacher failed:", err);
@@ -80,7 +92,7 @@ export function useDeleteTeacherMutation() {
     return useMutation({
         mutationFn: (username: string) => teacherController.deleteTeacher(username),
         onSuccess: () => {
-            await queryClient.invalidateQueries({ queryKey: ['teachers'] });
+            await queryClient.invalidateQueries({ queryKey: ["teachers"] });
         },
         onError: (err) => {
             alert("Delete teacher failed:", err);
@@ -92,7 +104,12 @@ export function useUpdateJoinRequestMutation() {
     const queryClient = useQueryClient();
 
     return useMutation({
-        mutationFn: ({ teacherUsername, classId, studentUsername, accepted }: {
+        mutationFn: ({
+            teacherUsername,
+            classId,
+            studentUsername,
+            accepted,
+        }: {
             teacherUsername: string;
             classId: string;
             studentUsername: string;
diff --git a/frontend/src/queries/themes.ts b/frontend/src/queries/themes.ts
index 391771c0..71e3f679 100644
--- a/frontend/src/queries/themes.ts
+++ b/frontend/src/queries/themes.ts
@@ -1,6 +1,6 @@
 import { useQuery } from "@tanstack/vue-query";
 import { type MaybeRefOrGetter, toValue } from "vue";
-import {ThemeController} from "@/controllers/themes.ts";
+import { ThemeController } from "@/controllers/themes.ts";
 
 const themeController = new ThemeController();
 
diff --git a/frontend/tests/controllers/student.test.ts b/frontend/tests/controllers/student.test.ts
index 4a911410..3f9b7db5 100644
--- a/frontend/tests/controllers/student.test.ts
+++ b/frontend/tests/controllers/student.test.ts
@@ -1,20 +1,20 @@
-import { describe, it, expect, beforeAll } from 'vitest';
-import {StudentController} from "../../src/controllers/students";
+import { describe, it, expect, beforeAll } from "vitest";
+import { StudentController } from "../../src/controllers/students";
 
 const controller = new StudentController();
 
-describe('StudentController', () => {
+describe("StudentController", () => {
     const newStudent = {
-        username: 'teststudent1',
-        firstName: 'Testy',
-        lastName: 'McTestface',
+        username: "teststudent1",
+        firstName: "Testy",
+        lastName: "McTestface",
     };
 
     beforeAll(() => {
         // Start backend
     });
 
-    it('creates a student and fetches it by username', async () => {
+    it("creates a student and fetches it by username", async () => {
         // Create student
         await controller.createStudent(newStudent);
 
@@ -29,7 +29,6 @@ describe('StudentController', () => {
         expect(student.firstName).toBe(newStudent.firstName);
         expect(student.lastName).toBe(newStudent.lastName);
 
-
         await controller.deleteStudent(newStudent.username);
     });
 });
diff --git a/frontend/tests/controllers/teacher.test.ts b/frontend/tests/controllers/teacher.test.ts
index 0a1de683..44c615d5 100644
--- a/frontend/tests/controllers/teacher.test.ts
+++ b/frontend/tests/controllers/teacher.test.ts
@@ -1,20 +1,20 @@
-import { describe, it, expect, beforeAll } from 'vitest';
-import {TeacherController} from "../../src/controllers/teachers";
+import { describe, it, expect, beforeAll } from "vitest";
+import { TeacherController } from "../../src/controllers/teachers";
 
 const controller = new TeacherController();
 
-describe('TeacherController', () => {
+describe("TeacherController", () => {
     const newTeacher = {
-        username: 'testteacher3',
-        firstName: 'Testy',
-        lastName: 'McTestface',
+        username: "testteacher3",
+        firstName: "Testy",
+        lastName: "McTestface",
     };
 
     beforeAll(() => {
         // Start backend
     });
 
-    it('creates a student and fetches it by username', async () => {
+    it("creates a student and fetches it by username", async () => {
         // Create student
         await controller.createTeacher(newTeacher);
 
@@ -29,7 +29,6 @@ describe('TeacherController', () => {
         expect(teacher.firstName).toBe(newTeacher.firstName);
         expect(teacher.lastName).toBe(newTeacher.lastName);
 
-
         await controller.deleteTeacher(newTeacher.username);
     });
 });