Here's my thought - get the gradeskip now so that when you move, it'll be a smooth transition into the next year as a new kid - see what I mean. Maybe don't show the tests to the school, just ask them to give him some above level tests that they use at their school to demonstrate that he already know so much of what they teach.
If he's reading and enjoying charlottes web then I would just assume that is is 'probably' just like the rest in your family.
So interesting the part about how intensely he reads other people, that must be very hard for a very young person. I know my son struggled with that somewhat.
I've been meditating lately to help dampen the Over Excitabilities, and am hopeful that this will work widely, perhaps even for your son.
Try this link for more info
https://sites.google.com/site/giftedmeditation/Love and More Love,
Grinity
