diff --git a/Back-End/School/apps.py b/Back-End/School/apps.py
index fe33f19..560e5ba 100644
--- a/Back-End/School/apps.py
+++ b/Back-End/School/apps.py
@@ -3,3 +3,6 @@ from django.apps import AppConfig
 class SchoolConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
     name = 'School'
+
+    def ready(self):
+        import School.signals
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diff --git a/Back-End/School/models.py b/Back-End/School/models.py
index 9120112..059620e 100644
--- a/Back-End/School/models.py
+++ b/Back-End/School/models.py
@@ -130,4 +130,68 @@ class PaymentMode(models.Model):
     establishment = models.ForeignKey(Establishment, on_delete=models.CASCADE, related_name='payment_modes')
 
     def __str__(self):
-        return f"{self.get_mode_display()} - {self.get_type_display()}"
\ No newline at end of file
+        return f"{self.get_mode_display()} - {self.get_type_display()}"
+
+class Domain(models.Model):
+    name = models.CharField(max_length=255)
+    cycle = models.IntegerField(choices=[(1, 'Cycle 1'), (2, 'Cycle 2'), (3, 'Cycle 3'), (4, 'Cycle 4')])
+
+    def __str__(self):
+        return f"{self.name} (Cycle {self.cycle})"
+
+
+class Category(models.Model):
+    name = models.CharField(max_length=255)
+    domain = models.ForeignKey(Domain, on_delete=models.CASCADE, related_name='categories')
+
+    def __str__(self):
+        return self.name
+
+
+class Competency(models.Model):
+    name = models.TextField()
+    end_of_cycle = models.BooleanField(default=False, null=True, blank=True)
+    level = models.CharField(max_length=50, null=True, blank=True)
+    category = models.ForeignKey(Category, on_delete=models.CASCADE, related_name='competencies')
+
+    establishments = models.ManyToManyField(
+        Establishment,
+        through='EstablishmentCompetency',
+        related_name='competencies',
+        blank=True
+    )
+
+    def __str__(self):
+        return self.name
+
+class EstablishmentCompetency(models.Model):
+    """
+    Relation entre un établissement et une compétence.
+    Permet de définir quelles compétences sont sélectionnées par un établissement.
+    """
+    establishment = models.ForeignKey(Establishment, on_delete=models.CASCADE)
+    competency = models.ForeignKey(Competency, on_delete=models.CASCADE)
+    is_selected = models.BooleanField(default=False)
+
+    class Meta:
+        unique_together = ('establishment', 'competency')
+
+    def __str__(self):
+        return f"{self.establishment.name} - {self.competency.name}"
+
+
+class StudentCompetency(models.Model):
+    """
+    Relation entre un élève et une compétence.
+    Permet d'attribuer une note à un élève pour une compétence.
+    """
+    student = models.ForeignKey('Subscriptions.Student', on_delete=models.CASCADE, related_name='competency_scores')
+    competency = models.ForeignKey(Competency, on_delete=models.CASCADE, related_name='student_scores')
+    score = models.DecimalField(max_digits=5, decimal_places=2, null=True, blank=True)  # Note attribuée
+    comment = models.TextField(blank=True, null=True)  # Commentaire facultatif
+
+    class Meta:
+        unique_together = ('student', 'competency')
+
+    def __str__(self):
+        return f"{self.student} - {self.competency.name} - Score: {self.score}"
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diff --git a/Back-End/School/signals.py b/Back-End/School/signals.py
new file mode 100644
index 0000000..7f37ca5
--- /dev/null
+++ b/Back-End/School/signals.py
@@ -0,0 +1,49 @@
+import json
+import os
+from django.db.models.signals import post_migrate
+from django.dispatch import receiver
+from School.models import Domain, Category, Competency
+
+@receiver(post_migrate)
+def load_json_data(sender, **kwargs):
+    if sender.name != "School":
+        return
+
+    # Chemin absolu vers le répertoire Back-End
+    backend_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+    # Chemins vers les fichiers JSON
+    json_files = [
+        ("Cycle1.json", 1),
+        ("Cycle2.json", 2),
+        ("Cycle3.json", 3),
+        ("Cycle4.json", 4),
+    ]
+
+    for file_name, cycle in json_files:
+        json_file_path = os.path.join(backend_dir, "competences", file_name)
+
+        if not os.path.exists(json_file_path):
+            print(f"Fichier JSON introuvable : {json_file_path}")
+            continue
+
+        with open(json_file_path, 'r', encoding='utf-8') as file:
+            data = json.load(file)
+
+        for domain_data in data['domaines']:
+            # Vérifiez si le domaine existe déjà
+            domain, created = Domain.objects.get_or_create(name=domain_data['nom'], cycle=cycle)
+
+            for category_data in domain_data['categories']:
+                # Vérifiez si la catégorie existe déjà
+                category, created = Category.objects.get_or_create(name=category_data['nom'], domain=domain)
+
+                for competency_data in category_data['competences']:
+                    # Vérifiez si la compétence existe déjà
+                    Competency.objects.get_or_create(
+                        name=competency_data['nom'],
+                        end_of_cycle=competency_data.get('fin_cycle', False),
+                        level=competency_data.get('niveau'),
+                        category=category
+                    )
+        print(f"Données importées depuis : {json_file_path}")
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