This article details the career of Harold Hodgkinson, one of the nation's leading demographers, and highlights some of his key statistical findings. In it Hodgkinson points out, among other things, some very interesting statistics about the relationship of class, as compared to race, and the probability of success on standardized tests. "If you know household income and the education level of the parents in America, you can predict about 45% of the variation on the national assessment scores without knowing anything about race." On, say, eighth-grade math scores, "social class is twice as predictive of variation as race is." Such research raises important questions about the form that educational accountability should take, and about what forms "systemic" reform may need to take.