Hi AM,
When I was moved from an accelerated program in Montessori where I was with grades 4-7 back to public school in 2d grade, I was much the same way. The teacher told my mom I was "incorrigible.".
Things escalated on both sides. The final straw for everyone was when one day I was put in detention and instead of staying there, I walked out of school and walked home. Heh. The school went frantic looking for me.
The solution was to let me read by myself in class on whatever I wanted as long as I took the tests with everyone and was quiet. Not the best solution. But a solution. Now as I look back, I can see that my mom dreaded the school calling!!!
Your son is very strong willed, has initiative, and and is very inventive. No doubt he will come up with something similar to the above with the same kind of emotional impact on all involved. He sounds like a wonderful kid.
Good luck!!!
