Our son was tested with the RIAS at age 6 through the school system (in FL). We've found the results to pretty meaningless in terms of advocacy, so we're planning to have him tested again with the WISC and also do achievement testing. Given the issues with under/over estimates that Dude described, we'd like to have a clearer picture of his abilities, strengths, and challenges before we do any more advocacy with the school system.