Hang in there. Your situation is pretty much exactly what we went through--including missed recesses and taking too long to finish easy work, which (wrongly!) became the thing the teacher focused on. Homeschooling has been hugely successful for us. DS7 is so much happier and healthier (mentally speaking).

I'm sorry the school wouldn't work with you, but I suspect homeschooling will be a success for your son.

Vent away! And if there's anything we can do to help you beyond just listening, please say so. Many of us have been where you are...

Kriston