The biggest predictor for delinquent behavior, other than prior delinquent behavior, is association with delinquent peers. So what sense does it make to force delinquent kids to associate with each other? If you said none, you are correct.
Nonetheless, we continually try intervention strategies that do just that. How often do you hear of kids being placed in group therapy, group homes, boot camp, and so on? These are very common treatment approaches in today’s world. Whom do you think they are with in these programs?