When I was a kid, sending kids to "jail" for the night was a great way to scare the hell outta them in the name of making sure they understood the gravity of the mistake they'd made crossing a certain line. Where I grew up, the police were always in cahoots with the parents to ensure that the kid got a right good unforgettable lesson outta the experience. Sounds like the sorta thing these stupid kids need to me.
I agree with the caveat over the last ~30yr we've normalized calling law enforcement over the most petty things. When teachers threaten to call the police when kids get in a fist fight it substantially waters down the gravity of calling the police for something that actually matters.
Yeah, it's really sad the direction it's all taken. Still not sure how exactly it could be improved (or if it's even possible anymore; it may already be too far gone).