From IDMB: During WWII, in a Catholic boarding school in the French countryside, two boys become friends. One is a French boy, Julien Quintin, and the other is a Jewish boy, Jean Bonnet, who is being hidden from the Nazis by the friars who run the school. Louis Malle directed this film based on what actually happened when he was at a boarding school himself during the war.
I watched this movie in college as part of an assignment for one of my French courses. It has been running on the Independent Film Channel for the last few days and I caught part of it yesterday. It really is an amazing film. Father Jean, especially in the last scene, shows such faith and bravery. (I cried, but you could have guessed as much.)
I'm not sure it is suitable for children, even older children, but that's a bridge I haven't approached yet. I do highly recommend it for the Netflix queue.