The sad thing is that these kinds of places are likely breeding grounds for future suicides and/or serial killers. You try to break the wrong person, don't be surprised when you start finding your coworkers, and likely many innocent bystanders, killed in some grisly fashion. You breed fear and self-loathing, its unfortunately inevitable, most likely.
I'm surprised there hasn't been a case were some former patient ended up taking a gun into one of the camps and just killing the managers.
Despite the idea that any angry, mentally disturbed teenager is a shooter waiting to happen, it's actually not that easy for underage psychopaths to get their hands on guns. Even if they're armed and dangerous, they'd need the patience, intelligence, and resources to get to the camp (often many states away) and commence the killing.
Like Mojo said, it's typical for murderous youths who are angry at their parents to start on the parents, and everything just goes from there. It's not usual for a teen with mental problems to not only hit their breaking point and acquire weapons to kill their parents, but make it a long distance (probably with their parents' car and stolen money) and begin a methodical killing before getting caught/killed, turning themselves in, or committing suicide. Among the kids who are disturbed enough to go on a killing spree, suicide is extremely prevalent.