Richard Murnane observes that the American ideal of equality of educational opportunity has for years been more the rhetoric than the reality of the nation's political life. Children living in poverty, he notes, tend to be concentrated in low-performing schools staffed by ill-equipped teachers. They are likely to leave school without the skills…

Education has become one of the most important issues in American society, often dominating the political landscape in response to lagging academic achievement and persistent gaps in performance between advantaged and disadvantaged children. In response, a variety of educational reforms have been implemented ranging from increased accountability…