Affirmative Disaster

A growing body of empirical evidence is undermining the claim that racial preferences in college benefit their recipients. Students who are admitted to schools for which they are inadequately prepared in fact learn less than they would in a student body that matches their own academic level. As an ongoing controversy at Duke University demonstrates, however, such pesky details may have no effect on the longevity of the preference regime.  Duke admits black students with SAT scores on av…