The girls and I went to their school today. The director is a lovely woman who was very helpful, and it turns out that there is another American family in the school, who have been in France for two years. (The mom is French, but the dad is American and the kids didn't speak French when they arrived in France.) Quite happily, Kate and Molly have one of each of their kids in class with them, which should be quite helpful. We also met another dad and his sons; the dad is Russian and the child doesn't speak much French at all. (The dad speaks almost none; I ended up doing quite a bit of translating between the director and the dad, as she gave us a tour of the school together.)
Molly is very excited for school to start, as they have badminton, fencing, and ping-pong as sports. Kate is less excited, but she picked up a number of sentences that I said, so she's clearly already learning some French. Lucy was quite overwhelmed by the end. The communal bathrooms were the last straw. After she saw how public and open the toilets were (they just have small, low dividers between them), she started crying. It may be a bit of a struggle to get her to go, though she is excited about the play structure in the courtyard.