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- Stanford economist Eric Hanushek has shown that better-educated students contribute substantially to economic growth. If U.S. students could catch up to the mathematics performance of their Canadian counterparts, he has found, it would add roughly $70 trillion to the U.S. economy over the next 80 years. So if the additional three million public-school employees we've hired have helped students learn, the nation may be better off economically.
- We can look at the "long-term trends" of 17-year-olds on the federal National Assessment of Educational Progress. These tests, first administered four decades ago, show stagnation in reading and math and a decline in science. Scores for black and Hispanic students have improved somewhat, but the scores of white students (still the majority) are flat overall, and large demographic gaps persist. Graduation rates have also stagnated or fallen. So a doubling in staff size and more than a doubling in cost have done little to improve academic outcomes.
- The implication of these facts is clear: America's public schools have warehoused three million people in jobs that do little to improve student achievement—people who would be working productively in the private sector if that extra $210 billion were not taxed out of the economy each year.
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