does anybody knows that if i will be legally stay in US if i get the i-20 for Sept? my opt is expiring on june 5th. so legally i can stay only till august 5th. i am trying to get an i-20 for block semester classes. is it possible to get the i-20 for sept or may be nov block semester and stay in US? is getting i-20 means that i am in F1? help me out!!