Peter Greene uses the example of Coke to show how market competition does not produce a better product. When faced with a loss of market share, Coca-Cola decided to put the same product into smaller cans. Maybe the failure of “Néw Coke” in 1985 taught them not to mess with the formula.

Similarly, in education, competition has not produced better education. Vouchers are used to send children to schools that teach creationism, that have no curriculum or certified teachers or to charter schools that push out low-scoring students and spend inordinate time on test prep.

Our slavish devotion to competition is destroying education.