"Most grad students from India studying in the US are by far of a higher quality" --- This is completely wrong. The one who go to study abroad are definitely are the TOP 10% at all in terms are talent and quality. It is only that their parents were able to send them to additional tuitions (private coach session apart from school time) and was educated and have money send them. I myself know at least 100s students who are far better than those who go to college in USA or other countries. Please note that exceptions are the one who go to Stanford, Berkley and few top notch ones but even they only get students who have money not the one who have passed excellent scores.