Developmental perspectives on prejudice provide a fundamental and important key to the puzzle for determining how to address prejudice. Research with historically disadvantaged and advantaged groups in childhood and adolescence reveals the complexity of social cognitive and moral judgments about prejudice, discrimination, bias, and exclusion. Children are aware of status and hierarchies, and often reject the status quo. Intervention, to be effective, must happen early in development, before prejudice and stereotypes are deeply entrenched.