I was associated with TYC in the late 70s and visited there days before it was closed. It was down to the very last handful who were there waiting to serve the remainder of their time in the military or behind real prison bars - their choice. Some of the guys started running their mouths and bam! it turned into an all out riot. I’m guessing that cost them the military option. The girls (not at Gatesville, obviously) were 10 times worse than the guys. They’d just as soon gouge your eyes out as to look at you. The “school” facilities were ticking time bombs with the counselors in charge only at the pleasure of the little thugs.
A lot of things changed in America by the late 1970s, that goes for the mental hospitals also.