Choosing teachers carefully has been the thing that has help up the most as well. Ask the principal if the parents can observe next years teachers, then make the recommendation yourself. If they aren't willing to accelerate at all, at least you may through careful intervention keep the boy in the hands of teachers who are willing to do what they can for him.

Shari
Mom to DS 10, DS 11, DS 13
Ability doesn't make us, Choices do!