Are you able to home school him tonneschris? Sounds like something's bothering him very much, and his behaviour may not be his fault. If he's finding the schoolwork impossible to do, or he's playing up to protect himself from bullies, then this needs looking into. As has been said, he may be suffering from AS, ADHD, some form of autism or connected condition, which needs to be investigated by a paediatrician. Meanwhile, try not to shout at your son, as this may isolate his feelings even further. Encourage & support him, and try to set aside time to talk to him and show an interest in whatever he does. Best of luck.