For "ordinary" and "many children" families - different amounts.
This is reported by a Brest reader of Charter97.org:
"Good afternoon. It’s Brest, the secondary school #35. They have already lost their conscience, and have already introduced specific rates for ordinary and large families. And, what a great indulgence - you can pay in two stages! And it is quite a separate topic about the improvement of the school. It can be seen with the naked eye from far away," - the Charter97.org reader writes.