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[quote=Anonymous]Numbers seem quite a bit off from what I've heard previously. Which test did you use for your son?

On Wechsler tests (i.e. WISC, WPSSI) an IQ of 146 is found in approximately 1 out of every 924 people. On Stanford-Binet, 1 out of 495.

http://www.iqcomparisonsite.com/iqtable.aspx

So if we take MCPS enrollment of 151,289 and we assume the number of kids with that IQ is similar to the national population (yes I know it's probably higher but stick with me for argument's sake!) you would get about 163, according to the Wechsler tests.

Now if you add in all the kids who, statistically speaking, are likely to have IQs that are 147 (130), 148 (104), 149 (82), 150 (65), 151 (51), 152 (40) etc. that's a lot of kids.

Can someone who knows something about IQ scores tell me whether this sounds reasonable or whether I've completely confused myself and am something in PP's post?

[quote=Anonymous]Our educational consultant told us that my DC's IQ, at 146, was one in every 40,000 kids, based on the U.S. population in general.  So that's 4 or 5 in a population the size of MCPS.

So even if MoCo skews a good deal higher, there are still only a handful of kids with an IQ like that.  Let's say it's much much higher than the U.S. and there are 20 kids with IQs around that level.  There are about 200 kids in HCGs, if I recall correctly.  So even in a class of 25, there won't be more than a couple who have an IQ like that.  So the PP's child, at 140, isn't right in the middle of the class.

I just think this is interesting from a statistical standpoint.  i do think drive and hard work play a huge role and, from what I can see, a really high IQ is not a predictor of academic success or happiness.

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