There is some correlation though. It's easier to pass admission exams if one is more intelligent. It's easier to remember the stuff that's taught in academia if one is more intelligent. The effect is much weaker in the other direction though; there are plenty of people who are intelligent but poorly educated due to limited opportunity: discrimination, poverty social difficulty fitting into educational institutions, etc.
In game terms, one could model that by granting an intelligence based modifier to the roll to increase education with college, and maybe to the college survival and success rolls. Maybe that's there already; I don't have my books handu.