My first prep-test was a 143... after LGB, LRB and endless prep-tests I got up to a 165 (untimed), then... with time, I plateued at 151-152...
I took a TM course and realized I had so much more to learn.... and decided to take the full TM Course for the October LSAT... my goal is 170+, possible?
Is it possible? Well, anything is possible. After all, a broken clock is right twice a day. But, I think your in the "one-in-a-thousand" odds here.
There seems to be a lot of misinformation floating on this board, and elsewhere, about the nature of the LSAT test. It is an APTITUDE test, and as such, after prepping adequately, the gains of hard work are minimal. Eventually, your intellectual capacity for the material governs; that is why it is used by Law Schools: they aren't interested in who works the hardest, but who has the innate skills to succeed in law school. Some prospective test takers, without prepping, take the test and get a 140, then take a course, study hard, and work there way up to 160, and see this as proof you can improve your score significantly though hard work. That is like saying I never golfed a day in my life, shot a 150, then took a three months worth of lessons, practiced incessantly, and now I can shoot 100. So, I will be able to beat Tiger Woods with a few more months of work.
Now, does that mean you cannot bomb the LSAT? Of course not. But, as the saying goes, you can't be more than your genetics say you can be, but through laziness or unpreparedness, you can be a whole lot less. If you have prepped adequately, going from a 151-152 (average) to 170+ (Top 1-2%) is as close to impossible as going from a 100 IQ to a 200 by studying. It won't happen. BUT, there may be a flaw in your preparation that keeps you from your innate 170. So, by all means, try!
I'd agree with all of that. The class for me just buffed me up a little more for the timing. I had 20 people in my class and I never heard of anyone improving 20 points like that. 143-151 seems fair to me though. I took a diagnostic, scored a 155 and then fluctuated on practice tests (timed of course) between 153-159. I ended up with a 157, which was of course right within my band I'd been scoring at. And I worked my ass off learning how to get 4 games done in time. I honestly don't feel like 4 more months of practice tests and studying would have changed much at all. I'd also emphasize Boscos point of anything beyond a 170 being very rare (1-2%) and probably not something reachable by studying.