Hmm. I think I am late to this discussion, but there isn't dates anymore on these posts so . . .

I think you are better off focused on providing the school with more recent documentation from 3rd grade timeframe. What she did as a prescholer and kindergartener aren't really relevant at this point. Children, even normally developing ones, make huge leaps in 1st, 2nd and 3rd grades.

I do like the Potter extension and think that shows creative skills. Incidentally, that's the type of assignments that our "pre-GT" (2nd grade) and GT (3rd grade and above) track classes provide. So if you have more of that, I would think that would be more persuasive to the school.