Scholars Shed New Light in Debate Over High-School-Graduation Numbers

American high-school-graduation rates peaked around 1970 before entering a long period of stagnation and decline, according to a working paper released this week by the National Bureau of Economic Research.

The decline in high-school graduation has been especially severe among male students, and it accounts for roughly half of the emerging gender gap in college attendance, according to the paper, which was written by James J. Heckman, a professor of economics at the University