On JHU's Facebook page, there is a roommate search group. The questions ask for things like intended major, religion, how important are your grades, what are your favorite hobbies, etc. Since I'm a Christian and come from an area where I've never been exposed to alcohol or drugs, I think I'd be more comfortable rooming with someone who doesn't drink or do drugs, or have those things in our room. I guess there are people to check for that kind of stuff (?) but based off my experience at SOHOP, I know things can slip under the radar.
I like the idea of random pairing otherwise, and think that it is best to have a roommate based on living habits, but what are the chances that I'll end up with a person like this? What should I do?