Education forms a unique dimension of social status, with qualities that make it especially important to health. It influences health in ways that are varied, present at all stages of adult life, cumulative, self-amplifying, and uniformly positive. Educational attainment marks social status at the beginning of adulthood, functioning as the main bridge between the status of one generation and the next, and also as the main avenue of upward mobility. It precedes the other acquired social statuses and substantially influences them, including occupational status, earnings, and personal and...