Poor vs. Wealthier, College Degree Edition

I have a feeling this is a network effect.  Basically: wealthier people who get college degrees have a better network to plug into via family/family friends than do poorer people.  This makes it easier to get jobs straight out of college, and that makes a big difference down the road (promotions, experience...).  A college degree is nice, but it doesn't by itself get you a job.  Having better connections helps a lot when it comes to finding work.  The degree is just a check-mark on the resumé (more often required now).