Study groups can be a mixed bag of tricks. A study group's success is largely depended on the social dynamics of the learners and what's in it for them. Yeah, it's really a social event. I believe that's Stephen's point - food and games to make study groups fun (Ummm, shouldn't we be doing that in class anyway?). For most students, our courses are pretty intense and at the end of the day, the learner just needs some down-time. Our teachers always offer our students use of our classrooms after class hours for study and we're always available for questions, etc. but about 2% of the learner take advantage of the offer. Offer them pizza on a break during class? You'll get 100% participation. Many of our classes create their own "private" Discord groups for study, discussions, and probably gaming - no instructors allowed! Tess' point, maybe? At any rate, if you're going to host a study group at the college (with administration's permission, of course) my recommendation is to be flexible and let the students take the reins under your supervision.