George Mason economics professor Bryan Caplan, at the libertarian think tank Cato Institute, said that college is not worth it for both taxpayers and for low-performing students coming out of high school. He examined it with two important questions: Is college worthwhile for the student and is it a good investment? Is college a good investment for taxpayers? Caplan said, “Education is a wasteful arms race, the more you get, the more you need to avoid looking like a loser.” For example, “in 1945, only about 25% of Americans over the age of 25 finished high school.” One used to...