I think it's used completely inappropriately for gifted identification (because they have a cut score of 139 composite), but it's even worse that they are using this to qualify or disqualify kids for special ed. If they use DD's CogAT score she probably would not have the discrepancy they need according to State law, but if they use her private WISC score, there is going to be a large gap between the WISC and Woodcock Johnson or WIAT writing clusters (I don't have her eval results yet so we'll see). If they use her WISC score they would need to use her GAI of 150 (I found a State document stating this). But with the CogAT the timing was a big factor dragging her score down. I have no idea how they are even going to figure out what is 1.75 standard deviations below 150 because the regression table only goes up to 129 IQ.
