A Somewhat Happy Education Headline? America's students are graduating high school at higher rates, according to a new Harvard report (via the Wall Street Journal.) In 2000, researchers found, 77.6 percent of Americans ages 20-24 had high school diplomas; 10 years later, 83.7 percent of that same group held diplomas. "The improvement was particularly sharp among blacks and Hispanics," WSJ reports. "For instance, in 2000, 61.2% of black men between 20 and 24 had finished high school; in 2010, 72.0% of black men in that age bracket had." But even so, 20 percent of American men between 20 and 24 -- and 14 percent of women -- still lack that crucial certification.