As a teacher, I know that I respond best when parents start with an informal message via email or phone that says "Hi! Thanks for the great unit about dinosaurs last week, Bobby was so excited! I know that sometimes his behavior is a challenge in the classroom and I'd like to discuss  how I can work with you to help him. Thanks for your dedication to my son, it really means alot."

This does two thing:
one- it's a little disarming. Instead of "what does parent x want me to do to accomodate her child now!!" I feel like the parent respects what I am trying to do, and wants to make it better for all of us.
and two- It lets me know the parent is willing to do what ever it takes to help thier chilld, and is able to do it in a respectful way. Thats great!

Hope this helps!

Well, after making several attempts, I would take him out of the school. That's if he and you are just miserable. A child's well being should be intact above all things. Try homeschooling the rest of the year or seeking out a private tutor/school. We had a similar situation and found that homeschooling was the answer. Very surprisingly, most problems go away and you will find that sweet little boy you once knew :) Good Luck

well there's always taking him out of that school or you could talk to the     princable that always works