My wife studied at an American college. She had no friends. The college had over 100 students 100% of them from India, Middle East and Turkey. The college was nothing but a way for H4 women to get F1 so that they could eventually get OPT and instead of being deadweight at home they could stand on their own legs. This is probably one of the N colleges out there.

There aren't too many American citizens in these colleges and I will not be surprised if these student constitute 50% of total F1s.