States’ Data Obscure How Few Finish High School - New York Times

States’ Data Obscure How Few Finish High School - New York Times: "One team of statisticians working at the state education headquarters here recently calculated the official graduation rate at a respectable 87 percent, which Mississippi reported to Washington. But in another office piled with computer printouts, a second team of number crunchers came up with a different rate: a more sobering 63 percent."