I agree with pretty much everything saintlennybruce said, and I don't see why anyone would be so vehemently against an anonymous online rating system for improv teachers. It's not like the system in place now is awesome... people usually sign up for a class with a very vague or no idea at all of what the teacher is like, especially in the early levels. One "bad" (for want of a better adjective, one as good as "solipsistic") instructor really has the power to turn someone completely off to improv, as we've seen in this thread. CLICHE ALERT!! Knowledge is power... I don't think it would hurt to have a RateMyProfessors type site, given you take it with a grain of salt and realize there's probably a disproportionate number of disgruntled students complaining about someone they didn't like, since that tends to motivate people more than talking about how wonderful someone is... human nature is poop. But overall, as I've found with RMP, after 10+ entries, an overall picture of the instructor emerges and the person reading their profile at least has a better idea of what the teacher is like than just throwing a dart at a wall of headshots of 101 instructors.
That being said, I've been very lucky and have had wonderful (or at least good, but mostly wonderful) instructors for every level so far, from beginning to the present. I can't speak for the other schools but I must admit UCB does an excellent job of screening prospective teachers - you have to be pretty damn good to teach at UCB, especially anything above 101. But I know people who have not been so lucky. It's not that they necessarily get "bad" (I'm going with it again) instructors - it's just they have a negative experience. And I don't think it would hurt for people to be able to get some unfiltered, honest opinions about teachers before dropping dough on taking their class and possibly running into one of those negative experiences.
Yes, I realize UCB (and likely other places) hand out a feedback form at the end of class. But let's be honest, most people fill these out hurriedly, there isn't much time for reflection and perspective, and they don't feel TOTALLY anonymous - your writing style and/or specific comments can make it pretty obvious it's you writing it, even if you don't put your name on it.
Now the question is who has the techincal know-how and time to kill to create such a site? Or here's an idea... can we add UCB to RateMyProfessors?

:loopy::love: