““works. Individual students can expect their incomes to rise roughly 8 to 12 percent for each additional year of school they complete. Nations, however, can expect their incomes to rise by only 1 to 3 percent for each additional year of school completed by their citizens on average.13 If schooling actually works by improving individual students, then we would expect the improvements for individual students to be cumulative across a nation. But nations don’t seem to benefit as much from educating their citizens. Something, as they say, doesn’t add up.””
