Belle, I just wanted to say good luck. I totally feel your pain. I think, and not to lump all boys in this category, but this is why so many boys are mislabeled as ADHD or whatever. I would definitely move up the food chain as Grinity suggests, especially since you have testing and documentation confirming he needs something more.
I am seeing it more every day as to how America (and I'm assuming that's where you are) focuses far too much energy on those that are behind and forgets those who are ahead. If the focus went out to every child and his/her abilities, I think those who make the "rules" would be amazed. This is also why I think the NCLB Act is such a crock - scuse my language. Children ARE getting left behind, they just don't see it that way because age wise, they aren't.
Good luck!