We watched this last night. Lovely movie! Amazingly, we're pretty sure that we saw this already but neither of us remembered anything from it! (This might make it seem like it's not worthwhile but it is.) Really wonderful singing and satisfying story.
Now I'm curious about the original movie: "La Cage aux rossignols"
Les Choristes: http://www.imdb.com/title/tt0372824/
La Cage aux Rossignols: http://www.imdb.com/title/tt0039234/