DD left about half of the quantitaive questions blank. (she has slow processing and ADHD and can be perfectionistic so it was a perfect storm). Most of the questions that she actually answered were correct. She was very young for her grade because she was grade accelerated. So she was 40 some percentile for grade and around 50th or 60th percentile for her age, for Quantatative. She also left a lot blank on nonverbal (probably about 1/3 blank) and was 60th-70th something percentile. I remember reading somewhere that the average kid will answer half of the questions correctly. We ended up having her take the WISC and her GAI was 150 vs 118 or something on the CogAT.
