<p>Test Masters
Kaplan
Princeton
Powerscore
Others??</p>
When I was studying for it, people liked Test Masters and Powerscore.
I would just buy books with the full length practice exams and the Logic Games Bible and study on your own though.
It really depends more on the actual instructor than the course itself. They all teach relatively similar strategies. Try to sit in on a sample class before deciding which one to take. You can also self-study like BiglawLawyer said, though. There are lots of online resources these days, so I think fewer people are taking prep courses than in the past. It’s a lot cheaper, too!
I took Kaplan and my score went up at least a few points. However, I not only took the class but studied all summer for the LSAT and took practice test after practice test; I would spend pretty much all day, 7 days a week, studying.
I used testmasters last semester and it helped me to get the just of everything (raised my score about 6 points on average) but ultimately the tactic that increased my score the most was taking tons(1 a day for a couple of weeks and 2 a day the week of the lsat) of practice tests and reviewing the questions I missed(raised my score approximately 10 more points from where testmasters left me). Once I began catching on to what the questions were looking for it all started clicking together quickly.
I agree that the actual instructor is pretty important, so its important to do your research on the instructor. Also, it depends on your skills. For example, if you are doing awesome and reading comp and arguments and only need help with logic games, it might be wiser to invest in an online course that lets you just purchase LG. However, if your weaknesses are pretty evenly distributed, then you may want to go for a course. If you are aiming for a 170+, you will also need to do additional work, so don’t assume that you should take the test right after you finish the course, give yourself at least a month to do that extra bit of studying.