Is it more accurate to say the children's behavior is the reason that teachers are quitting . . .
. . . Or the failure of school systems in enforcing behavior rules and putting consequences on children who continue to act up?
IOW, kids are gonna be kids. They're going to test systems, policies, rules. It's part of being a kid.
But when the entire system fails to hold those kids accountable, up to and including holding them back a grade when they fail to meet academic standards, THAT is the real problem as I see it.