How to Block certain domain users

[bealzz]

Hey Everyone,
I was wondering if theres a way to block users from a domain from logging into computers located in another domain.

We have two domains setup, one for teachers and one for students, but the students can still login to computers on the teachers domain.

Long story short, is there a way to block certain domains from the pulldown lists at first login?

 

[kuyaglen]

You want to prevent students from logging on to the computers in the teachers domain?