One of the things I’ve found most important to have an effective study group is to make your expectations for the group clear, both on a weekly and long term basis. For example, when I establish a study group I always make it clear (a) how many times a week I want to meet and for how long, (b) what I want to accomplish (homework, go over notes, work on practice midterms, etc.) and (c) how I study before coming to the group. Part C is especially important, because it is imperative that you study with a group which either reflects your study habits or is aware of the difference. It is not ok to be in a very active study group and not study on your own time; neither is it ok for you to be a in a group where nobody else comes prepared. So again, your expectations must be clear.

One other thing which not many people do but find very effective when done is to write tests for each other. I have done this in two different study groups and the members of those groups all found it very helpful. On a set schedule, each member can write up one or two questions and share them at a group meeting or over facebook to (a) increase understanding of the materials (b) start thinking about what the professor might put on a test and (c) further develop the problem solving skills relevant to that course.