Study Groups - a supposed formula for success

I have heard much about CAE study groups; the pass rate stats seem to significantly be in the favor of those who utilized study groups. I selected the Association Forum of Chicagoland's suburban study group and attended my first session a few weeks ago; although I was not well-prepared for it, I found it helpful. Unfortunately due to work-related travel I am missing the second and third sessions; I hope that my travel schedule and present workload don't end up being a huge disadvantage.