Innocence (2004)
Innocence is a 2004 French film written and directed by Lucile Hadžihalilović, based on the novella Mine-Haha, or On the Bodily Education of Young Girls by Frank Wedekind, and starring Marion Cotillard. It takes place at a mysterious girls' boarding school, where new students arrive in coffins. The film was well received by critics, winning five awards.
More at Wikipedia.