I keep hearing talk of forming study groups. What are your experiences with study groups? Are they absolutely necessary? Will you do better by being in a study group?
The reason I ask is because during undergrad studying in groups would either lead to
A.) The group socializing the whole time and not accomplishing much
B.) Me having to teach everyone all the concepts because I was ahead of them (really don't mean to sound like a prick, its just the truth. I'm a nice guy, honest

I usually study better on my own, but I don't want to be at a disadvantage.