Blanche wrote:

The visa expired? The school is responsible for a) expelling the
student and b) immediately informing INS.

A visa allows one to enter the country. You do not have to leave when it expires.
Once you're in the country, the INS tells you how long you can stay.

George Patterson
If a man gets into a fight 3,000 miles away from home, he *had* to have
been looking for it.