16.  Vassar College

Co-ed since 1969, Vassar is one of the Seven Sisters, a group of historically women-only colleges. The published total price of attendance is $69,010, but only 24 percent of undergraduates pay that amount.  Students and families earning $30,000 or less pay an average of $4,900, and those earning $30,001 to $48,000 pay $8,522.