The CogAT does not work for gifted kids with any sort of issues that might affect speed. Any school system that uses it as the sole test for determining eligibility for gifted services is discriminating against essentially all twice exceptional children. Our district is one of these. Apparently they will allow a child to take the CogAT untimed if he has a 504 or IEP in place that specifies the accommodation of extended time on tests. Unfortunately, in order to have a 504/IEP the kid has to have already had the second exceptionality identified. Lots of gifted kids are able to compensate away their disabilities, so they don't have a 504/IEP in place and they don't get the accommodations they need to demonstrate their cognitive ability on a highly speeded test like the CogAT.
Do you have real IQ scores for your child? I apologize if this has already been discussed elsewhere.
