Index: schema/ucs-school-import.schema
===================================================================
--- schema/ucs-school-import.schema	(Revision 71014)
+++ schema/ucs-school-import.schema	(Arbeitskopie)
@@ -38,10 +38,22 @@
         DESC 'auxiliary class for teachers'
         SUP ucsschoolType AUXILIARY )
 
+ditcontentrule ( univentionSchool:53.1
+        NAME 'dcrTeacher'
+        DESC 'Teachers can only additionally be staff.'
+        AUX univentionSchool:53.4
+        )
+
 objectclass ( univentionSchool:53.2 NAME 'ucsschoolStudent'
         DESC 'auxiliary class for students'
         SUP ucsschoolType AUXILIARY )
 
+ditcontentrule ( univentionSchool:53.2
+        NAME 'dcrTeacher'
+        DESC 'Students can only additionally be ExamStudents.'
+        AUX univentionSchool:53.5
+        )
+
 objectclass ( univentionSchool:53.3 NAME 'ucsschoolAdministrator'
         DESC 'auxiliary class for administrators'
         SUP ucsschoolType AUXILIARY )
@@ -50,10 +62,22 @@
         DESC 'auxiliary class for staff users'
         SUP ucsschoolType AUXILIARY )
 
+ditcontentrule ( univentionSchool:53.4
+        NAME 'dcrStaff'
+        DESC 'Staff can only additionally be teachers.'
+        AUX univentionSchool:53.1
+        )
+
 objectclass ( univentionSchool:53.5 NAME 'ucsschoolExam'
         DESC 'auxiliary class for exam users'
         SUP ucsschoolType AUXILIARY )
 
+ditcontentrule ( univentionSchool:53.5
+        NAME 'dcrTeacher'
+        DESC 'Only Students can write Exams.'
+        AUX univentionSchool:53.2
+        )
+
 objectclass ( univentionSchool:53.7 NAME 'ucsschoolAdministratorGroup'
         DESC 'auxiliary class for UCS@school admin groups'
         SUP ucsschoolType AUXILIARY )