We have created to two group policies, one for students and one for staff.
Sometimes when a teacher login and logout, that computer will hold the
group policy and next time when a student logs in he will not get his
policy but he will get the teachers policy. The only workaround we have
right now is to delete the the three group policy folders from
c:windowssystem32. But we cannot do this all the time.

Is there any other fix which will solve stuck group policy issues.