I went to mostly black and poor public schools my entire childhood. Back then there were a few teachers who clearly didn't care and were never held accountable. Most of the teachers were pretty good though. It's increasingly shifted towards the opposite.
I was blown away by how pathetically run my children's public schools are here in Colorado so I put them both in private school. They get less than half the money per student that the public school system I live in gets, and are vastly more efficient. The operations, the instructors, it's all just run correctly.
When my daughter was still in a public elementary school I walked in one day to try to get her iPad fixed when they were doing full remote learning due to the pandemic. There was a large meeting taking place amongst all the staff. None of them had bothered to return my calls which is why I had to go in person. They looked like they were having a party because I didn't see any work getting done.
At the end of the day it's a government school. Name a single government agency that is efficient with their money. Name a government agency that's good at hiring, or keeping good talent.
We should just do a voucher system and let the private sector deal with this. As a taxpayer I'm deeply resentful of having my money get taken from me and given to unionized teachers who refused to work for a full year and then had the nerve to take summer vacation as if it had been a normal year. These were the same folks who were put at the front of the line for vaccinations independent of their age groups. And then they proceeded to act like they were still in danger and couldn't open schools.