Thank you, aeh! I looked up what subtests are included in that calculation, and if I'm correct, it needs the Figure Weights subtest? Our child was not given that subtest for some reason (she was given Picture Concepts instead).

She hit the ceiling or close to it in all three Verbal subtests (18s and 19s). Other sections were good, but not as high as those. Not sure if the GAI is totally necessary, but looks like we can't get it anyway..?