tuvz

i got a b1-b2 visa and a f1 visa approved and stamped into my passport before i came into the us. as i was coming more then thirty days before my course begun i entered on my b1-b1 visa. my course is starting in a week and i was wondering if i can change over to my f1 visa without leaving and re-entering the country ie: change visa status while still in the us? help please thanks