Yes of course I don't actually hate what school is now. Not directly. How could I, I'm not even allowed to observe it! But I definitely hated what I had to do and it did not work for me. And that is useful information when I'm helping my kids.
"I'm not even allowed to observe it!"
Was this true when you were a kid? Why do you think it changed? Because when I was a kid and a kid was bad, the teacher would make the parent come to class until the kid started behaving. Do you think this would work today? And why would some teachers be opposed to it?
You say you can’t know something, and then assert that the dated knowledge you do have is still relevant.
If it wasn’t actually useful information, how would you know? How would you discover that?
As you say, it’s a bit of a black box unless you volunteer in the classroom (as my spouse did).