Taking up classes is as good as forming a study group, only a little more serious. All they could teach you is basic stuff 90% of which you might already know. All we need to crack the gmat is self discipline and preparedness to put several hours of study each day because people say you atleast need 200 hrs of study(ofcourse depends on p2p). I couldn't put so much effort everyday, hence got a 690. Maybe a little more seriousness and a little more effort in formulating my strategies would have helped me do better.
i have got PMs with location and contact details from couple of people now. Guys, please contact me so that we could form a group.