In Canada, the “minimum age of responsibility” is 12 yrs old. IOW, no charges, no detention, etc. OTOH, the young offender can be taken into care, and sent to a foster home, where the parents know something about discipline.
I suspect that the laws in the U.S. are similar; but, I don’t know the details. Anyone?
My late father’s brown leather belt across the back of the legs and on the buttocks 8-10 times would be helpful. And if there is sassing back, my late mother from the front washing out the mouth with soap is a good remedy.
It all works wonders for bad behavior.
Here in Pennsylvania we had an 11 year old who shot and killed his father’s pregnant girlfriend (20 gauge to the back of the head). He was tried via the Juvenile system (partly because of UN pressure about trying an 11 year old as an adult) and was found “delinquent” in a closed-door hearing with no jury and no press. His status will be reviewed every six months. So he could be out in six months, or twelve, or twenty-four. In any case they can’t hold him past his 21st birthday.