Public schools have fantastic and cost effective results except where they are sabotaged by politics. Unfortunately destroying public education for explicitly racist reasons is now a central plank in the republican platform.
Also I don't think the word "explicitly" (or "racist," or both) means what you think it means.
Who shut down the public schools resulting in catastrophic learning loss and depression? I'll give you a hint. It wasn't Florida.
https://www.city-journal.org/california-public-schools-are-f...
If public schools, run by the government, don't work great when politicians get involved than that means they are not a good option.
Is a meaningless tautology.
There are plenty of well run public schools throughout the world. Politicians are involved in all of them by definition. If you have a failing political system your public schools won't do well, but neither will your private schools.
I was summarizing your post.