I generally refer to myself as ASD (also has disorder in it) to describe my autistic traits and ADD for my ADHD. Sometimes I use Neuro divergent or ND if I’m feeling lazy.

A bit late to the party but: Barry McAuckner

It’s different everywhere in the US. I grew up in California. Graduated HS 1989. My elementary and high schools were completely fenced in while the middle school i attended was not at the time, but has been for some time now. Even in high school it was a closed campus and only Seniors were allowed to leave at lunch if their parents signed off on it. It was called “Senior Privileges.” I had a friend that went to Highschool about 40mi from me and they had an open campus and everyone could leave at lunch. No clue how those decisions were made, but his HS had a literal smoking section on campus for students. The 80s were a different time.