Our child is younger than yours, but we had one neuropsych in 1st grade and another in 4th grade, with the same provider (not Stixrud). We will go back to that provider when we need to update for high school purposes. We are confident that the diagnosis is correct, and so don't need a second opinion. By going to the same provider each time, we can better see growth and improvement and places where the gap with her non-disabled peers has grown.