Here's an interesting article that talks about how University often violate federal law in forcing students who have mental illness to leave.
http://www.newsweek.com/2014/02/14/h...th-245492.html
You should look into it more, maybe there is mental illness organization that can help people who are being kicked out for having mental illness. They might help you know if the school is violating the law and what specifically to do about it.