What I think this question is getting at is whether a class of 32 is too small to have a good social life. I'd have to say that overall, no, I don't think that this is a major problem. In terms of finding good social opportunities, that is entirely up to you. There are some people who spend a lot of time hanging out with fellow classmates, and some people who don't. Some people hang out with the UP students, and there are a bunch of them. If you want to find friends from outside the CCLCM program, it's pretty easy to do that. The Case medical school building is only about a mile away from the LRI. And there are lots of other graduate and professional students around; Case has a law school and a dental school too.
What tends to happen is that people just kind of gravitate toward others with like interests. There are a ton of student groups on both campuses, and it's easy to find like-minded people just by joining one or two of those groups. And then a lot of times a few people decide to do something and invite everyone else. A lot of us eat lunch together in the CCLCM student lounge, and there are plenty of parties and impromptu get-togethers. Actually, I think that the hard part is having to turn down some activities that sound fun because I just don't have time to do them all.