Instead of serving as a springboard to social mobility as it did for the first decades after World War II, college education today is reinforcing class stratification, with a huge majority of the 24 percent of Americans aged 25 to 29 currently holding a bachelor’s degree coming from families with earnings above the median income.
http://campaignstops.blogs.nytimes.com/2012/03/12/the-reproduction-of-privilege/