I attended AADA for a year. My main problem with it is that so many students are cut after the first year (me included, but I don't think I'm speaking from a place of sour grapes). I think one of the big things about an acting class is that it be a safe place where you can take risks and "fail".
At AADA you are sort of constantly reminded that almost 2/3 of you won't be invited back for the 2nd year. So class is a place of fear, rather than safety.
Most of the opinions I hear from people is that they have a brilliant money making plan. Accept a huge 1st year class, charge them a lot of money, then make big cuts each year. I realize that doesn't speak too highly of my getting accepted there, but it is what it is. I don't even list it on my resume anymore.