[jamesdmiller]

"IQ tests simply are not used at any scale that would be required to study such a correlation" I think you are wrong about this. There are a huge number of social scientists who study IQ. Also, IQ tests are very frequently given to children, and to everyone who wants to join the U.S. military.

[ineedasername]

Edit: I'm speaking from my knowledge of this topic in the US. I'm not ware of practices in other countries.

I'm familiar with the school systems and their on boarding processes for new students in many parts of the country, and am not aware of any pockets that systematically utilize IQ tests.

You're correct about military recruits, but I don't know if their scores are reflective of the general population. Certainly the composition by demographics differ somewhat from the general population, which woild cause me some concern if I were trying to generalize from their IQ tests to the broader population.

However, the context of my comment was about IQ related to elite colleges, and that remains an area where the data is sparse for IQ scores of such students. There simply isn't much if any research being performed these days tying IQ to success in higher education.