Most schools have a lot of activities outside of school. I can only speak for DMU but they have things such as intramurals, club events, speakers, social events, ect in the evening. Most of the students in the class also hang out, outside of school. Depending on what you are into they go to sporting events, bars, parties, ect. Some students even have teams in competitive sports leagues around town such as softball, soccer, and basketball.
The catch is no one can tell you how your class will be in school, some classes are really close others don't want to have anything to do with each other. In general, there will be someone of like mind that you can hang out with, and at DMU it is nice that you meet the 250 DO students, the 40 PA students, and the 40 PT students also.