Commentary: The Role of Race/Ethnicity in a Developmental Science of Equity and Justice.

This commentary makes a case for the role of school racial/ethnic diversity in a new developmental science of equity and justice with a focus on intergroup attitudes, discrimination, and social exclusion. Creative ways to conceptualize and measure ethnic diversity as a multifaceted, dynamic, and fluid construct that changes across time and space are discussed. The commentary concludes with policy implications of this approach for improving the lives of children growing up in an increasingly multiracial/multiethnic society.