Cal Professor John Ogbu thinks he knows why rich black kids are failing in school. Nobody wants to hear it. The black parents wanted an explanation. Doctors, lawyers, judges, and insurance brokers, many had come to the upscale Cleveland suburb of Shaker Heights specifically because of its stellar school district. They expected their children to succeed academically, but most were performing poorly. African-American students were lagging far behind their white classmates in every measure of academic success: grade-point average, standardized test scores, and enrollment in advanced-placement courses. On average, black students earned a 1.9 GPA while their white counterparts held...