Want to hear my hot take?

It's not funding (though that is A problem).

It's not attracting qualified, talented teachers (though that is A problem).

The main problem is parents and society. Individualism means parents know better than the schools, and teach their kids that attitude as well. This cuts across class, ethnicity, and any other demographic marker you can think of.

Am I right? I don't know, but I think I am.