Fix mypy error

Author: RadoRado

.python-version

@@ -1 +1 @@
-3.12
+styleguide-example

styleguide_example/testing_examples/selectors/schools.py

@@ -20,7 +20,7 @@ def school_list_school_courses(
     if start_date is None and end_date:
         raise ValidationError(SCHOOL_LIST_SCHOOL_COURSES_PROVIDE_START_DATE_MSG)
 
-    school_courses = school.school_courses.order_by("start_date")
+    school_courses = school.school_courses.select_related("school").order_by("start_date")
 
     if start_date and end_date:
         started_courses_Q = Q(

styleguide_example/testing_examples/services/students.py

@@ -19,9 +19,7 @@ def student_create(*, email: str, school: School, start_date: Optional[date] = N
 
     start_date = start_date or timezone.now()
 
-    school_courses = school_list_school_courses(school=school, start_date=start_date).select_related(
-        "school_course__school"
-    )
+    school_courses = school_list_school_courses(school=school, start_date=start_date)
 
     for school_course in school_courses:
         roster_create(