Hi Jtooit,
We have two Young Scholars, the youngest was accepted last year around this time. I haven't looked to see if the application has changed since then, but we sent in several letters of recommendation for her.
She has test anxiety and her score was not representative of her IQ based on the letter the tester wrote, so I felt we needed a very strong portfolio. We sent samples from age 5 through 8, only choosing items that seemed extreme.
In terms of math, I would have him work on something at the highest level he can, unassisted, and add that to the portfolio. The more handwritten work you can include, the better, IMHO. Best of luck and well wishes to you during the application process!
Incogneato
