On an average day in 2000, more than 10 percent of all black American men in their 20s were either in prison or in jail. Most of them had very little schooling. About one in three black male high-school dropouts were behind bars. A black man reaching his early 30s was nearly twice as likely to have a prison record than to hold a bachelor's degree. And young black men with no college education were more than twice as likely to have been to prison than to have served in the military.