alt Hacker News> the SAT an IQ test
You’re thinking of a 2004 study that found “the SAT (and later, with Koenig, the ACT) was substantially correlated with measures of general cognitive ability and could be used as a proxy measure for intelligence” [1]. To my knowledge, this remains the case.
Time pressure is a crucial aspect of it, though. I think GP may be alluding to the alleged abuse of disability exceptions, allowing kids (who don't need it) to take longer.