This paper estimates the marginal returns to college for individuals induced to enroll in college by different marginal policy changes. The recent instrumental variables literature seeks to estimate this parameter, but in general it does so only under strong assumptions that are tested and found...

The human capital century -- Inequality across the twentieth century -- Skill-biased technological change -- Origins of the virtues -- Economic foundations of the high school movement -- America's graduation from high school -- Mass higher education in the twentieth century -- The race between...