OK, so I heard a couple of times Full Sale being mentioned.
Check these (if you haven't):
Is it worth going to a recording school for sound design/post? Good school to study post production Audio Recording Technical Institute
Many people suggest not going to school for post at all, and I can confirm that I actually started learning when I got OUT of the school - school actually burdens you with all kinds of additional classes that are not strictly sound-related (well, university type schools at least).
But I'm so glad that I went there, because I've learned all the additional stuff about film-making (directing, editing, acting, organization) that are actually very useful when you talk to a director or a producer, and don't want to make a fool of yourself, or want them to take you seriously. Only when you're on their level in THEIR field, will they respect you.
Not that you can't learn all that stuff for yourself, either.
It's also useful for networking.