diff --git a/schoolData/src/main/kotlin/com/intelligentbackpack/schooldata/datasource/SchoolDomainRepositoryImpl.kt b/schoolData/src/main/kotlin/com/intelligentbackpack/schooldata/datasource/SchoolDomainRepositoryImpl.kt
new file mode 100644
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--- /dev/null
+++ b/schoolData/src/main/kotlin/com/intelligentbackpack/schooldata/datasource/SchoolDomainRepositoryImpl.kt
@@ -0,0 +1,143 @@
+package com.intelligentbackpack.schooldata.datasource
+
+import com.intelligentbackpack.accessdomain.entities.Role
+import com.intelligentbackpack.accessdomain.entities.User
+import com.intelligentbackpack.schooldata.adapter.ClassAdapter.fromDBToDomain
+import com.intelligentbackpack.schooldata.adapter.LessonAdapter.fromDBToDomain
+import com.intelligentbackpack.schooldata.adapter.LessonAdapter.fromRemoteToDB
+import com.intelligentbackpack.schooldata.adapter.ProfessorAdapter.fromDBToDomain
+import com.intelligentbackpack.schooldata.adapter.ProfessorAdapter.professorFromRemoteToDB
+import com.intelligentbackpack.schooldata.adapter.StudentAdapter.fromAccessToSchool
+import com.intelligentbackpack.schooldata.adapter.SubjectAdapter.fromRemoteToDB
+import com.intelligentbackpack.schooldata.db.entities.SchoolClass
+import com.intelligentbackpack.schooldata.db.entities.Teach
+import com.intelligentbackpack.schooldomain.entities.School
+import com.intelligentbackpack.schooldomain.entities.calendar.SchoolCalendar
+import com.intelligentbackpack.schooldomain.entities.calendar.alteration.AlterationEvent
+import com.intelligentbackpack.schooldomain.repository.SchoolDomainRepository
+
+class SchoolDomainRepositoryImpl(
+    private val remoteDataSource: SchoolRemoteDataSource,
+    private val localDataSource: SchoolLocalDataSource,
+) : SchoolDomainRepository {
+    override suspend fun getSchool(user: User): School {
+        val schoolName = localDataSource.getSchool()
+        val schoolCity = localDataSource.getCity()
+        val school = School.create(schoolName, schoolCity)
+        val teaches = localDataSource.getTeaches()
+        val teachesByProfessor = teaches.groupBy { it.professorEmail }
+        val lessons = localDataSource.getLessons()
+        val subjects = localDataSource.getSubjects()
+        val year = localDataSource.getYear()
+        val classes = localDataSource.getClasses().map { it.fromDBToDomain(school) }.let {
+            if (user.role == Role.STUDENT) {
+                val userClass = localDataSource.getUserClass()
+                it.map { schoolClass ->
+                    if (schoolClass.name == userClass) {
+                        schoolClass.addStudent(user.fromAccessToSchool(schoolClass))
+                    } else {
+                        schoolClass
+                    }
+                }
+            } else {
+                it
+            }
+        }
+        val professors = localDataSource.getProfessors().map { it.fromDBToDomain() }
+            .map { professor ->
+                teachesByProfessor[professor.email]?.let { teach ->
+                    teach.groupBy { it.schoolClass }.entries.fold(professor) { acc, entry ->
+                        val className = classes.first { it.name == entry.key }
+                        val subjectsForClass = entry.value.map {
+                            subjects.first { subject -> subject.subjectId == it.subjectId }.name
+                        }.toSet()
+                        acc.addProfessorToClass(className, subjectsForClass)
+                    }
+                } ?: professor
+            }
+        val domainLessons = lessons.map { lesson ->
+            lesson.fromDBToDomain(
+                professors.first { professor ->
+                    professor.email == teaches.first {
+                        lesson.teachId == it.id
+                    }.professorEmail
+                },
+                classes.first { schoolClass ->
+                    schoolClass.name == teaches.first {
+                        lesson.teachId == it.id
+                    }.schoolClass
+                },
+
+            )
+        }
+        val calendar = SchoolCalendar.create(year)
+        return classes.fold(school) { acc, schoolClass ->
+            acc.addClass(schoolClass)
+        }.let { schoolWithClasses ->
+            professors.fold(schoolWithClasses) { acc, professor ->
+                acc.addProfessor(professor)
+            }
+        }.let { schoolWithClassesAndProfessors ->
+            calendar.addLessons(domainLessons.toSet()).let {
+                schoolWithClassesAndProfessors.replaceCalendar(it)
+            }
+        }
+    }
+
+    private suspend fun downloadForStudent(user: User, year: String) {
+        val student = remoteDataSource.downloadStudent(user.email, year)
+        localDataSource.saveSchool(student.getInsitutesName(0), student.getInsitutesCitta(0))
+        localDataSource.saveClass(student.getClasses(0))
+        val lessons = remoteDataSource.downloadLessonsForStudent(user.email, year)
+        lessons.groupBy { it.idCalendario }.forEach { (calendar, lessonsForClass) ->
+            val className = remoteDataSource.getClass(lessonsForClass.first())
+            localDataSource.insertClass(SchoolClass(className, calendar))
+            lessonsForClass.groupBy { it.professore }.forEach { (professor, lessonsForProfessor) ->
+                val professorInfo = remoteDataSource.downloadProfessor(professor, year)
+                localDataSource.insertProfessor(professorInfo.professorFromRemoteToDB())
+                lessonsForProfessor.groupBy { it.materia }.forEach { (subject, lessonForSubject) ->
+                    val id = localDataSource.insertTeach(Teach(0, professor, className, subject))
+                    lessonForSubject.forEach {
+                        localDataSource.insertLesson(it.fromRemoteToDB(id.toInt()))
+                    }
+                }
+            }
+        }
+    }
+
+    private suspend fun downloadForProfessor(user: User, year: String) {
+        val professor = remoteDataSource.downloadProfessor(user.email, year)
+        localDataSource.saveSchool(professor.getInsitutesName(0), professor.getInsitutesCitta(0))
+        val lessons = remoteDataSource.downloadLessonsForProfessor(user.email, year)
+        lessons.groupBy { it.idCalendario }.forEach { (calendar, lessonsForClass) ->
+            val className = remoteDataSource.getClass(lessonsForClass.first())
+            localDataSource.insertClass(SchoolClass(className, calendar))
+            lessonsForClass.groupBy { it.materia }.forEach { (subject, lessonForSubject) ->
+                val id = localDataSource.insertTeach(Teach(0, user.email, className, subject))
+                lessonForSubject.forEach {
+                    localDataSource.insertLesson(it.fromRemoteToDB(id.toInt()))
+                }
+            }
+        }
+    }
+
+    override suspend fun downloadSchool(user: User) {
+        val year = remoteDataSource.downloadYear()
+        localDataSource.saveYear(year)
+        val subjects = remoteDataSource.downloadSubjects()
+        localDataSource.insertSubjects(subjects.map { it.fromRemoteToDB() })
+        when (user.role) {
+            Role.STUDENT ->
+                downloadForStudent(user, year)
+
+            Role.PROFESSOR ->
+                downloadForProfessor(user, year)
+
+            else -> {}
+        }
+    }
+
+    override suspend fun addAlterationEvent(alterationEvent: AlterationEvent) {
+        TODO("Not yet implemented")
+    }
+}