In all my years of public school education 1964 thru 1977, the most behaviorally messed up kids were the children of the school teachers. So, I learned at least something in public schools. Authority or state sponsored credentials do not necessarily mean competency. In fact quite often the exact opposite.
Similar timeframe, we seemingly didn’t have the kind of problems we see today. Or at least I wasn’t aware of any.
Most kids seemed to be fairly well behaved back in those days. It’s like night and day with today’s schools, especially the inner city schools.