I have had a few students try to bully the class, but instead of accepting their behavior I would talk to them with assistance from counselors. Talked to them as a group, and then separated the group into having individuals be part of other teams and problem went away. Sometimes dealing with PTSD service personnel can be a bit exhausting, but after having similar techniques of sitting with a counselor, discussing methods to the problem, then working in separate teams the student becomes more involved and does not feel excluded or like an outsider.
