100% can confirm as a former public school teacher, as well as a home hospital teacher (The people who teach injured/long-term suspension/incarcerated students). School board caters to the people who vote them in and give them money, which is parents and more specifically rich parents. There are good administrations, but odds are, if you live in a rich or poor area/inner city, your administration either is trying to keep documented discipline down, without disturbing the status quo by bothering parents so the kids run all over you, or they don't give a fuck because the student base is totally fucked and its not worth it to them to actually fight it and do their jobs.
Decency and discipline isn't taught to American children by most parents, and they hate anyone calling them out on it so they push the blame onto everyone else. The system and the parents both just want to push them through and not have the kids be a total disgrace that reflects poorly on either of them.
Perception is reality: The True American Dream.
We also have a shortage of hot as fuck cake teachers, which is a terrible waste to us who both work in the schools AND have a teacher fetish. Need more anime of this as well.