Reply to It's official: CogAT scores are not age-adjusted this year!!!

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Reply to "It's official: CogAT scores are not age-adjusted this year!!!"

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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]Yes to question 1 and I clearly stated "at best you could normalize the test for the fat, but no guarantee there would be any statistical significance in the need to age adjust."  Whats your verbal score?[/quote]

Not OP.

So you are saying that the deviation between oldest and youngest in Fairfax County would be significantly different than the deviation between oldest and youngest in national tests which show several points of adjustment?  What is the is the basis to presume the bell curve in FF County is tighter than the national curve?[/quote]

Where did you get the number "several point of adjustment"? We didn't get the raw scores, so can't project based on national normed data. But for NNAT, what I know is with the SAME raw score, the normed score for 7 years old (Oct kids) and 6 years old (Sept of next year) could be diff for 1 standard deviation or more. Depends on where you are, 1 standard deviation could be 36%, 12% or just less than 1% in percentile. If the kid's score is near 100 (50% average kid), 1 standard deviation means 86%-50%=36%. If the kid's score near 86% for 7 years old, same raw score could make him/her in 98% national percentile. Without raw scores published, everything is just speculating, no sound science supports it. It's crazy claim if anyone says one could adjust the percentile by view the age printed on the report.
[/quote]

Agreed, but it seems safe to say that the youngest would see the scores increase (%), and the oldest see them drop.  So why do you think the raw scores where not provided?  [/quote]

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