College educationally various outreach efforts are targeted to first generational students (those most likely to not have knowledge about how to maneuver the educational system). Unfortunately this leaves some holes, as not all student with parents who went to college know how to maneuver the system.

Basically whatever metric you choose will leave gaps. And if you try to universally implement a system you get other negative effects (from cost, to information overwhelm, to non-adaptability).