diff --git a/backend/model/assessment.py b/backend/model/assessment.py
index e588544..7359cb6 100644
--- a/backend/model/assessment.py
+++ b/backend/model/assessment.py
@@ -5,7 +5,7 @@ from datetime import date
 from typing import TYPE_CHECKING, Optional
 
 if TYPE_CHECKING:
-    from backend.model.student import Tribe
+    from backend.model.tribe import Tribe
 
 
 class Assessment:
diff --git a/backend/model/student.py b/backend/model/student.py
index 099cf08..06807e8 100644
--- a/backend/model/student.py
+++ b/backend/model/student.py
@@ -1,24 +1,10 @@
 from __future__ import annotations
 
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
-    from backend.model.assessment import Assessment
-
-
-@dataclass
-class Tribe:
-    name: str
-    level: str
-    students: list[Student] = field(default_factory=list)
-    assessments: list[Assessment] = field(default_factory=list)
-
-    def register_assessment(self, assessment: Assessment) -> None:
-        self.assessments.append(assessment)
-
-    def register_student(self, student: Student) -> None:
-        self.students.append(student)
+    from backend.model.tribe import Tribe
 
 
 @dataclass
diff --git a/backend/model/tribe.py b/backend/model/tribe.py
new file mode 100644
index 0000000..a11516d
--- /dev/null
+++ b/backend/model/tribe.py
@@ -0,0 +1,22 @@
+from __future__ import annotations
+
+from dataclasses import dataclass, field
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from backend.model.assessment import Assessment
+    from backend.model.student import Student
+
+
+@dataclass
+class Tribe:
+    name: str
+    level: str
+    students: list[Student] = field(default_factory=list)
+    assessments: list[Assessment] = field(default_factory=list)
+
+    def register_assessment(self, assessment: Assessment) -> None:
+        self.assessments.append(assessment)
+
+    def register_student(self, student: Student) -> None:
+        self.students.append(student)
diff --git a/tests/model/tools.py b/tests/model/fakes.py
similarity index 98%
rename from tests/model/tools.py
rename to tests/model/fakes.py
index 611be09..a27f8f3 100644
--- a/tests/model/tools.py
+++ b/tests/model/fakes.py
@@ -3,7 +3,7 @@ from random import choice, randint
 from faker import Faker
 
 from backend.model.assessment import Assessment, Domain, Exercise, Question, Skill
-from backend.model.student import Tribe
+from backend.model.tribe import Tribe
 
 faker = Faker()
 
diff --git a/tests/model/test_assessment.py b/tests/model/test_assessment.py
index d66d016..358d80e 100644
--- a/tests/model/test_assessment.py
+++ b/tests/model/test_assessment.py
@@ -1,6 +1,6 @@
 from random import choice, randint
 
-from .tools import (
+from .fakes import (
     build_tribe_assessment_exercise,
     build_tribe_assessment_exercise_question,
 )
diff --git a/tests/model/test_student.py b/tests/model/test_student.py
index b31bc9e..29c396a 100644
--- a/tests/model/test_student.py
+++ b/tests/model/test_student.py
@@ -1,7 +1,8 @@
 from random import randint
 
-from backend.model.student import Student, Tribe
-from tests.model.tools import build_tribe_assessment
+from backend.model.student import Student
+from backend.model.tribe import Tribe
+from tests.model.fakes import build_tribe_assessment
 
 
 def test_tribe_register_assessment():