I agree, but by age 11, these children knew what they were doing.Children who harm others by bullying should be removed from the care (of lack of) of their parents and placed in State custody, and they should not be returned to their parents. Children learn from the example set by their parents, and children who bully come from homes where bullying is exhibited to each other and to people outside the home. Returning the child to the home is a disservice to the child who will follow the parent example and will perpetuate bullying as an adult. The only way to break the cycle is to remove the child from the environment and provide exposure to nurturing adults who will exhibit non-bullying behavior. Aggressive behaviors exhibited by children result when aggressive adults raise them. Get the children away from those adults.
Also, it's a sad fact that the foster care system isn't likely to provide the criminals with nurturing adults.