This is a very touching story, very well done on all levels. A high school theater teacher, suffers from the impolite attitude of her students, and their continuous disrespect. She finds herself with a gun she found with one of her students, and ends up with half of her class as hostages. Here starts the complexed relation between people there. A very important thing that you should know, is the estate of Arab people living in France, their social phobia, and their lack of integration, that led to very big issues lately. That's what this movie talks about. With a great scenario, full of surprises and unexpected events, Lilienfeld makes an emotional social thriller, discussing rights of women, immigrants, Muslims, teachers, respect, pedagogy... Adjani is great in this part, i see she deserves her Cesar, as for the entire cast, especially the teenagers, very convincing. Some "committed thriller movie" is not something we see everyday, so do not miss this good one!