Lori-
I don't mean to rain on your parade, but I'd hesitate before submitting taped reading sessions. It might be a good way to demonstrate precocity in a very young child, at age two or three, but not so much at age nine. Even if the material is advanced, it doesn't strike me as being as "far out" as you need for DYS. A tape of your son discussing his reading would, in my humble opinion, be MUCH more effective. If you could have him toss around ideas with an adult mentor who specializes in his particular interests, that might be eye-opening indeed.
I see this is old, so perhaps it's not helpful, but I wish you luck anyway.
