The National Center for Education Statistics released this week a report on public-school graduation and dropout rates, and the news overall isn’t bad, the National Journal reports. About 78 percent of high school students have graduated within four years, the highest average since 1974. Graduation rates by race and ethnicity are up across the board, with Hispanic students seeing a 10-point increase over five years to 71.4 percent, and black students showing a 7-point increase to 66.1 percent. But it’s hard to ignore comparative gaps. Asian-American students graduate at a rate of 93 percent–nearly 27 points higher than black students–while white students are at 83 percent…