There is some evidence of their relationship. http://www.jstor.org/discover/10.2307/2112184?uid=3739600&uid=2&uid=4&uid=3739256&sid=21102607867173 Measured intelligence has a positive relationship with college plans, attendance, and graduation, according to this study. Certainly, it is not a perfect relationship. But yes, on aggregate, there does appear to be a relationship. However, I specifically discussed education and not intelligence for a reason, as that is what the research measured.