There’s a bit more to the story than you may think here... you also aren’t allowed to be homeschooled. It’s illegal. They ban religious practices for minors (wearing hijabs, for instance).
Some people are took that as directed at Muslim community — https://m.timesofindia.com/world/europe/france-passes-anti-r...
Also giving you children to the state to be taught is somewhat disturbing.
EDIT: By deferring to others to teach your children, they won’t learn your culture, traditions and will (statistically) be worse off than if you teach them yourself.
My wife and I settled on making less money (still more than enough), but raising our kids ourselves. It’s hard, but easily the most rewarding thing. Plus our kids are WAY ahead in most areas. Imagine, your children are learning from other children all day at school... is that better than learning from adults all day? No.
When they get older we will probably consider a “pod” or one teacher for 6-8 kids with a family we know. You can pay the teacher far more and the parents can be more involved (we can effectively dictate the curriculum). I’m also planning on having my kids help me with work by 8-10. They can learn to participate and be productive far earlier.