That's no exaggeration. The latest junior/senior high school built in my county could easily double as a minimum security prison with it's electronic doors, cameras and a design that insures no one goes outside between opening and closing bells.
Curriculum-wise recess isn't the only endangered institution. Physical Exercise classes (P.E.) have become mostly voluntary where it's common to see kids opting out to stay on their phones during that time. Civics is as dead as Latin language courses as that interferes with Democrat programming. Then there's the insidious "gender fluidity" garbage that teaching has no business indulging in.
It's a wonder most kids come out of there sane at all.
There have been videos of new recruits arriving at basics. Women were fat. The young men with boobs were just gross.