You mentioned his GAI. I'm assuming that the WMI and PSI were significantly lower than the VCI and PRI. The CogAT is a tightly timed test, so a kid with processing speed issues could run into problems finishing. Also, if they gave the test at grade level (meaning the test intended for 5th graders), just a few silly errors will bring the percentile rank down below the cutoff.
A lot of us on here have kids whose WISC-IV scores are much higher than their CogAT scores.
Will your district accept a WISC result from an outside tester? Ours won't even accept one from their own psychologists--it's the CogAT or nothing.
