Of course, in the higher grades, we have cops at the doors and kids are searched for weapons. Don't ask what the demographics are.
In the 1960’s up in MA, when I was in the 5th and 6th grade, I was a crossing guard ALONE in charge of the safety for a couple hundred younger children crossing a busy, unlighted town street.
When I was a junior and senior in high school I was a hired janitor. There was only one full time adult janitor for the entire school and us kids did ALL the work. He inspected.