At home I hear a lot of negative self-talk such as, "I'm stupid. I can't do this. I'm so dumb." I always reassure him and point out how well he's doing. Why is he doing this and what can I do to help him?
Talk with the school counselor. He may be able to give your son some individual time or include him in a small group. You will probably want to get additional help for him outside the school, and the school counselor or your pediatrician can refer you to a therapist in your community.
Be sure that you talk with your pediatrician about the behaviors you're seeing. You will want to rule out the possibility that your son may be depressed. If that is the case, however, the doctor can talk with you about addressing the depression with medication and/or therapy.