I have a 10 year old, dx ADHD and struggling with test anxiety. Scored 155 on VCI, but 95 (37%ile) on Processing Speed. I am trying to get an IEP from the school for accommodations for typing and extra time on tests. Can anyone compute the GAI for me? They only gave me the FSIQ, which I am not sure is valid because of the big discrepancy with the processing speed.

19 Similarities
19 Vocabulary
10 Block Design
13 Visual Puzzles
14 Matrix Reasoning
16 Figure Weights
13 Digit Span
11 Picture Span
10 Coding
8 Symbol Search

He just started on ADHD meds a few months ago, so we are still playing with meds and dosages. He had the Woodcock Johnson done 2 years ago and the school psych did it again with the WISC V, but his reading and writing scores only went up slightly, and math actually went down pretty substantially (despite being in AoPS Pre-Alg). So, I am not sure what to make of them. I don't know how to compute the overall achievement score -- does anyone know?

Prior Current Scores
140 127 Broad Math
127 135 Broad Reading
121 129 Broad Written Lang
133 Total Achievement

This is a kid with a strong interest in science, but who seems to score highest on the verbal stuff. He is accelerated across the board, but struggles with test anxiety. I am not sure if there are deficits getting in the way of his ability to prove himself, especially with respect to math exams where he seems to really choke under time pressure. Any thoughts or help with interpretation is greatly appreciated.