It really depends on your school. I play for a rather high profile d1aa school and we never get tested by the school, only by the ncaa, once a year, and only a few "randomly" selected guys.. now our school does randomly drug test, but only for marijuana and ephedrine. I know the ncaa does test d2, i have buddies in D3 and they've never been tested by the ncaa. But i do believe some schools take it upon themselves to test.