I think you're right but I had to think about it and might not have noticed. How did you have that ready to go?
I disagree with this argument, but that's the basis of it.
Did you spot one here?
> I have a basic understanding of statistics
Perhaps an intermediate understanding would help. Entire schools tend to score higher or lower together, also wealth correlates to IQ and scholastic success and zip code. There are also other reasons an entire group would be biased higher or lower.
> I deal with this kind of sounds-good-if-you-don't-think-too-hard "insights" all the time
Uh-huh.