Reply to Chances for AAP placement with very high NNAT, OK CogAT?

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[quote=Anonymous]To 15:04, I should have been clearer that it was an estimate but I do think its relatively reliable.  Until more data is provided, I think its a pretty decent estimate.  Here is a copy/paste from a different thread of the basis for my estimate.
Again the average SAT score in the US is 1010 and the average IQ for those kids would be around 110 based on the chart referenced above.
The average SAT scores for all of fairfax county are 1120. Using the same chart, that makes the average IQ 118.54 (16SD) for fairfax county kids.
Assuming FCPS kids at the elementary level have that same margin against all of the US, then the average IQ for FCPS is 8.54 higher than all the US. I think this is a reasonable assumption that there would be a similar margin for the cogat test in elementary that there is for the SAT at the high school level.
Now looking back at the chart, find 95 percentile and the 15SD is 124.66 and 16SD is 126.31. Since it was determined FCPS is 8.54 points higher than the US average, just add 8.54 to 124.66 and 126.31. That puts the 95% threshold at somewhere between 133 and just under 135 if this years kids were on the old system.
If you want to know what your kids score would have been on the old system, just use the chart to find the percentile and add 8.54 to whatever the IQ score shows. [/quote]

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