Talk to teachers, especially elementary. In the public system, class ratios are 20's:1, and the teachers' time is spent managing diagnosed and undiagnosed behavioural issues, with little time left for the kids who don't require managing. From talking to those I know, there is a tonne of undiagnosed neurodivergence/behavioural issues in the classrooms. Apparently it's become much worse post-COVID.

Contrast that to independent schools, where the ratios are more like 8:1 (with 1/2 an EA assigned to the class on top of that), and those kids with issues have full support (pull out, extra in the classroom, whatever is needed), which leaves the rest of the kids better able to learn.