Does anyone know how IQ tests and achievement scores compare? My son's WJ-III achievement scores show 99th% or better on 10 subtests (>99.9 on 4). But when he was tested with the SBV his nonverbal was 98th% and verbal was 84th, giving him a full scale at 95%. The examiner did then use "select subtests" of the WPPSI for verbal skills as she didn't think the SBV captured his verbal skills. She didn't give numbers but said that he scored from above average to very superior on these subtests.
I'm wondering whether I should apply for YS - we could really use the help and support, but I wonder if he is at that profoundly gifted level or not. His initial achievement scores and some behaviors make me think so, but then the IQ scores don't reflect it. Is that possible? Do you think I should go ahead and apply?
