The reason why Moore won’t touch the schools is that he and the rest of the lefties are beholden to the teacher’s unions. They have a lock on policy in most states and give generously (with or without the teacher’s permission) to the democrats.
Doing a sicko type of piece on public schools is like shooting your own foot for Moore. He is more likely to go after private schools and how they promote religion, patriotism, etc.
On a side note, I grew up going to private through 8th grade then to public. I thought my public school education was ok, but there is no way my kids are going to one. The public schools in San Diego had deteriorated too much.