>Education doesn't work if the classroom is full of kids who can't behave.
Education doesn't work, full stop. Or at least, it doesn't do what you think it does. The point isn't to provide a learning environment, or provide resources for students to learn. After all, education isn't paid for by an equity slice of the alumni's human capital. No, it's paid for and administered by government officials, working on the behalf of employers and parents. And what they want isn't bright, curious, and inquisitive people - they're happy when they get them, but they've got much bigger concerns. Obedience, reliability, conformity, conscientiousness, and pliability are all much bigger things that they want to cultivate.
Like, it speaks to the success of the educational system that you think it's hard to be a nerdy kid in today's educational environment and that school is a poor learning environment for so many children, and you don't immediately follow that up with something like "and that's why my children aren't going to school".