My DS took the CogAT Form 6 Level 1 as part of a GT process for school when he was 6.5 years old. I requested a copy of his (manually scored) CogAT score report. It looks reasonable. One part struck me as slightly odd, so I thought I'd ask if anyone here has an opinion about it.
For a raw score of 42 correct out of 44 questions on the Nonverbal subtest, these derived statistics were given:
Universal Scale Score (USS) = 199
Standard Age Score (SAS) = 127
Percentile = 95%
Stanine = 8
It surprised me that missing two questions on the Nonverbal subtest was enough to drop the percentile for that subtest down to 95%. DS missed one question each on the other two CogAT subtests, Verbal and Quantitative. The percentiles given for those subtests were each 99%. I would guess the percentile and stanine are age-based rather than grade-based, and that the test was scored using the 2005 Norms.
Does 95% seem reasonable for a 42 / 44 Nonverbal raw score? If so, the CogAT is more sensitive than I would have guessed. Does anyone have any insights or related score data they would be willing to share?
Thanks.
