Sharon, just revisiting the GAI question - have a look at this thread:

http://giftedissues.davidsongifted....ge_discrepancy_in_WISC_I.html#Post106352

This is an example of both VCI and PRI being VERY high, but the supporting WMI and PSI are more "normal" so they pull the FSIQ down but the GAI is very very high. The GAI would reflect the child's incredible reasoning ability, the FSIQ may (or may not) be a better reflection of how they perform in the classroom. The GAI tells you that you have a child with truly extraordinary giftedness the FSIQ tells you it's possible they may perform like a more "normally gifted" kid. It's possible for a child with scores like that to either be under estimated or to be constantly asked why they don't try harder, why they are underperforming, etc.