Autor: Murnane Richard J. Murnane

About 27.5 million Americans-nearly 24 percent of the labor force-earn less than $8.70 an hour, not enough to keep a family of four out of poverty, even working full-time year-round. Job ladders for …

As the incomes of affluent and poor families have diverged over the past three decades, so too has the educational performance of their children. But how exactly do the forces of rising inequality af …