What annoyed me the most about this movie was the drab, very dark photography. There are lots of scenes where you can barely make out what is happening onscreen. It's fine to make a movie using only natural candles (and low light bulbs) as lightning, but it should be done professionally, and without everything looking gray and washed out.
The plot begins nice, moody and intriguing, but the minute Ms Duret is on the screen, it starts to border on the comical. Her flat character acts, talks, sounds and dresses like a cynical parody of a dumb, pompous headmistress who has no clue what she is doing, but wants to appear competent no matter what.
The script looses focus, basic reason and coherency in the middle of the movie, and it all pretty much falls apart in the end. The last scenes are very touching, but hardly make you feel satisfied or rewarded for watching a dark screen (with some fire and candlelight on it) and listening to Duret blabbering about being a Genius or feeling inspired. She is a deluded narcissist living in a dream world, but how she could ever establish & run this surreal, otherworldly school is another of the many questions the sketchy script does not care to answer.
The score is very classy and stylish though, unlike the rest of this forgettable production.