They kept Celece Docterman, who filed a lawsuit. She was very mentally ill and was treated inhumanely, hence the justification for the lawsuit.
They have also taken kids who are bipolar (aka manic depressive), and the low-wage staff who supervise them daily have no training or understanding of what a manic state is, how to work with someone who is depressed, what to look for in someone having a psychotic break/nervous breakdown, etc. They take many kids who are being treated by psychologists and psychiatrists, and then place them in oversees programs with no therapists or counseling of any sort. Usually, a psychiatrist drops in every few months to prescribe meds to the ones who haven't yet started to conform. Again, the low wage staff are not trained or educated at all on how to work with kids with mental illness. They are only trained to give out consequences for infractions of WWASP rules.