You Draw It: Family Income vs. College Attendence 11 years ago
The link to the study comparing income and graduation was broken.
Here it is : http://www.nber.org/papers/w17633
The female advantage graphs are truly interesting.
[ my public key: https://keybase.io/hyvel; my proof: https://keybase.io/hyvel/sigs/0FJ5aP6busdUdJPFv_xCiWOMJAqUfnsrqeWV-D-ca4A ]