In Brazil, the country with the largest population of African descent in the Americas, the idea of race underwent a dramatic shift in the first half of the twentieth century. Brazilian authorities, who had considered race a biological fact, began to view it as a cultural and environmental condition. Jerry Davila explores the significance of this transition by looking at the history of the Rio de Janeiro school system between 1917 and 1945. He demonstrates how, in the period between the world wars, the dramatic proliferation of social policy initiatives in Brazil was subtly but powerfully...