Believe it or not, there are hundreds of thousands of school busses that roll through out nation each and every school day without Hell’s Angels acting as a bus monitor.
Instead, school districts employ people who are able wake up in the morning and each day successfully fulfill their duties, regardless of constraints placed on them by administrators.
Those places are where parents all care. The buses do not even NEED monitors then; the kids behave tolerably.
However the situation that floods the country is those where the parents do not care. Evil needs no special invitation. What tells you this situation is rare? Maybe for it to hit the public eye is rare. But go into any slum or most big cities and they’ll tell you. It’s a jungle.