Ask your son's teacher to help you try a positive behavior plan with your son. The teacher can send you a daily note -- as simple as a smiley face or a check mark -- to let you know how well he worked that day, then follow up at home. A good day can earn an extra bedtime story or a walk around the block just with you; two or three good days in a week can earn having a friend over to play on the weekend. You can increase the good work required to earn a reward as his behavior improves. The key to any system like this is to reinforce the good work consistently and over a long period of time.
Positive Behavior Plan
Elementary School Expert Advice from Barbara Potts