Originally Posted by Iucounu
I thought 99.9th percentile only meant in the top thousandth. That's not that incredible, is it? Am I missing something? I never realized until this moment how many people must be able to qualify for DYS. (And happy because it gives me a lot of hope.)
Yes, it is 1 in 1,000. I could be wrong, but due to the need to have both ability and achievement scores in that range, I suspect the # who qualify might be somewhat less than 1 in 1,000. I have a kiddo who qualified on IQ but has never had achievement scores quite that high and who is 2e. I'd have to guess that there are others in a similar situation.

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