It’s the American dream: get a good education, work hard, buy a house, and achieve prosperity and success. This is the America we believe in—a nation of opportunity, constrained only by ability and effort. But during the last twenty-five years we have seen a disturbing “opportunity gap” emerge. Americans have always believed in equality of opportunity, the idea that all kids, regardless of their family background, should have a decent chance to improve their lot in life. Now, this central tenet of the American dream seems no longer true or at the least, much less true than it was.