Until relatively recently, a college degree was fairly affordable, especially if a student was willing to work and to attend an in-state public school. That started to change in the 1980s. But in the past decade, the cost of a college education has skyrocketed, rising faster than inflation – faster even than health-care costs. Take the University of Washington. Twenty-five years ago, a student who worked half time during the school year and full time in summer could pay for college, says Mr. Callan, whose institute recently studied tuition rates there. "That's not true anymore," he adds. "You couldn't even come close."
http://www.csmonitor.com/USA/Education/2012/0606/Student-debt-What-s-been-driving-college-costs-so-high-anyway