First talk with the teacher, and ask about his actions in the classroom. Perhaps hes just not being challenged enough. The teacher may have to put him on a special project, to make him feel that he is important, and the class needs him. There are school counslers that can talk with him, and you also. My daughter, hated school, never liked it, it was a battle, she just thought it was boring, and dumb. There are ways to get him out of this stage, but you all need to find the source of the problem first.It may the teacher,he doesnt feel comfortable with. Just be patient, and use all the sources out there to figure it out, he will improve. Good Luck.