The difference between VCI and PRI doesn't invalidate the IQ score, but it may indicate that the FSIQ is not a good representation of her abilities and maybe shouldn't be reported. Did the evaluator note anything like this?
Her PRI is clearly a strength, and it seems she may be more of a visual thinker. This can sometimes be difficult in the American School, where most everything is presented and tested in the verbal realm.
I'm not sure if the APD would affect PSI. PSI is processing speed and weighs heavily on visual motor skills - not listening/ auditory skills. How are her fine motor skills? What kinds of visual motor/ visual processing tests did they use? Her skill actually is not that low relative WMI and VCI.
It is interesting that her WMI and PRI scores practically flipped. What did the evaluator say about that? Were the changes in medication, sleep or anything that might account for a difference in performance?
What is the IEP for? Does she have speech and language supports and reading supports. Given the APD diagnosis and lower VCI, it seems there might be some type of language based reading disability.
It sounds like you might have concerns. How is the school using the WISC? Have they evaluated in any other areas. IDEA mandates that evaluations be comprised upon a number of tests, in all areas of disability. Evaluations should also include observation, teacher assessments, work samples etc.
