It seems like it might count. I hope it counts. I just don't know if it counts.
I guess it boils down to whether the VCI extended norms score is a standard score.
I imagine that someone who knows more will chime in soon, but what I'd do is submit my DYS application, and in the next week or so ready as much portfolio information as possible, in case they ask for it; or just ask Davidson up front whether you will need to submit a portfolio.
ETA: It looks like you might be in luck! Check this out:
Pearson WISC-IV Technical Report #7, "WISC�IV Extended Norms" From page 2:
The scores derived from the extended norms should be interpreted the same way as any other standard scores derived from the WISC�IV.
