Make sure that your son understands that you expect him to show respect for the adults and friends around him, no matter what changes he is going through. Talk with the school counselor about your son's behaviors. She may be able to give him some individual time or include him in a small group. You may want to pursue family counseling for all of you, and the counselor or your pediatrician can refer you to a therapist in your community.
When Parental Authority Is Challenged
Elementary School Expert Advice from Barbara Potts