diff --git apple-school-manager/modules/univention/asm/models/classes.py apple-school-manager/modules/univention/asm/models/classes.py
index fd972ec..48cb477 100644
--- apple-school-manager/modules/univention/asm/models/classes.py
+++ apple-school-manager/modules/univention/asm/models/classes.py
@@ -154,12 +154,12 @@ def from_dn(cls, dn, *args, **kwargs):  # type: (AnyStr, *Any, **Any) -> AsmClas
 				instructor_id = teachers[0]
 				instructor_id_2 = teachers[1]
 				instructor_id_3 = teachers[2]
-				additional_instructor_ids = teachers[3:15]
+				additional_instructor_ids = teachers[3:<NEW LIMIT>]
 			except IndexError:
 				pass
-			if len(teachers) > 15:
+			if len(teachers) > <NEW-LIMIT>:
 				logger.warn(
-					'Class %r has more than 15 teachers. Only 15 will be synchronized. This is a limitation of the '
+					'Class %r has more than <NEW-LIMIT> teachers. Only <NEW-LIMIT> will be synchronized. This is a limitation of the '
 					'Apple School Manager service.', school_class.name)
 		return cls(
 			class_id=school_class.name,