One of my uncles was asked to stop bringing his rifle to highschool because him and one of the teachers kept talking about hunting in the parking lot and getting to class late. The principle felt they were likely to at least make it in the building on time if they weren't chatting in the parking lot about their rifles/hunts/etc.

People used to have an insane amount of freedom and things generally went better.

I was in Cub Scouts in the early 90s and got a Swiss Army knife. I thought it would be cool to show it off to the kids on the bus. It got confiscated by the principal and I was suspended for one day. I think I got off light. I can’t imagine what would happen these days.