As somebody who's spent some time studying the impact of various levers (income, educational achievement, maternal education etc) on university/college enrolment I'd like to throw in an economist's perspective that the NY Times did not include in the chart. You may draw the conclusion from the chart that income prevents the poorest from attending university because they can't afford the fees. This is highly misleadin…
So is there no genetic component to this at all? I see parental income and educational achievement mentioned, but not parental genes. Kids who got got good genes from their parents are more likely to go to college. And the parents who gave the kids good genes are likely to have high income. Genetics is the most important ingredient here.
"Genetics is the most important ingredient here." is a pretty extraordinary claim, and extraordinary claims require extraordinary evidence.