By Andrew Kelly. The world of postsecondary education has changed tremendously since the early 1970s. In 1972, about a quarter of 18-24 year olds enrolled in college; thirty years later, enrollment rates had climbed to 40 percent. The number of non-traditional students—part-time students; adults who are balancing work, family, and school; and so on—has also ballooned, and these students now outnumber the “traditional” undergraduate that lives on campus at a four-year college. College also costs about three times what it used to, even after adjusting for inflation. More...