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In 2003, only two colleges charged more than 40, 000 a year for tuition, fees, room, and board. Six years later more than two hundred colleges charged that amount. What happened between 2003 and 2009 was the start of the recession. By driving down endowments and giving tax-starved states a reason to cut back their support for higher education, the recession put new pressure on colleges and universities to raise their price.
Nicolaus Mills (Sat,) studied this question.