This article details the development and validation of a measure of critical consciousness, defined as the capacity of oppressed or marginalized people to critically analyze their social and political conditions, endorsement of societal equality, and action to change perceived inequities. In Study 1, an exploratory factor analysis (EFA) was conducted with a diverse sample of youth, resulting in three internally consistent factors: (a) Critical Reflection: Perceived Inequality, (b) Critical Reflection: Egalitarianism, and (c) Critical Action: Sociopolitical Participation. In Study 2, a confirmatory factor analysis (CFA) was completed with a new sample of youth. Strong model fit estimates in Study 2 confirmed the factor structure of Study 1 and resulted in a final 22-item measure called the "Critical Consciousness Scale" (CCS). The CCS has the potential to unite and advance the fragmented conceptualization and measurement of critical consciousness, the primary motivation for the development of the scale.