You have to include all the scores from every blessed test. They understand. It may be that the SB5 does qualify from having a high subscore or two. Anyway it's normal for the scores to bounce around a bit - the tests really weren't created to handle kids with this sort of LOG. The fact that she was reading before the 3rd birthday is also an important supporting milestone.
I wouldn't give up so quickly on getting the WISC scores - simply get a meeting to sit down with the GC or Principle or school psychologist, and provide an envelope to mail directly to Davidson after signing a release form, in case they just don't want YOU to see the scores. In any case, I think if the school writes a letter stating the scores as you have, and that they refuse to give out any more report details, and send that to DYS that that will cover it.
I will say that it's much more usual to see scores drop from age 3 to age 6, as the late bloomers blossom and catch up. Therefore, don't distrust the WISC numbers.
My advice, start giving out those reference forms, fill out the application, send in what you have for portfolio and whatever letter you get get out of the school, and have everything ready to mail as soon as you get the WJ scores.
As a group we have a tendency towards perfectionism. Some parents have taken 3 years to complete their application. Don't err on that side. The process is fluid, and they seem more likely to ask for more than to say a flat out no.
Love and More Love,
Grinity