@robbietoy - If you think you are going to get away from drug use by attending Pitzer, you are sadly mistaken. According to the 5C newspaper article quoted below, there were 39 drug related referrals from Pitzer to the campus authorities in 2013. That’s for a college community approximately one third the size of Wesleyan, meaning, that on a per capita basis the rate of occurrence was nearly the same.
Moreover, the Pitzer referrals were strictly as a result of ambient complaints of suspicious activity. It certainly appears as if the 5C colleges have a far more passive approach toward drug enforcement than Wesleyan:
http://www.tsl.pomona.edu/articles/2013/2/22/feature/3613-drug-policies-prove-difficult-to-enforce