The present study was designed to examine longitudinal predictors of moral courage in late adolescence. Supportive, responsive parenting, which was measured through home observations and family reports in the fifth grade year, predicted girls' willingness in late adolescence to speak up or take action when they witnessed or experienced injustice or harm. In contrast, parenting that was harsh and restrictive predicted both girls' and boys' later reticence in those circumstances. Further, the effects of earlier parenting were mediated by individual and peerrelated factors. Specifically, social competence with peers in fifth grade and self-esteem in twelfth grade mediated the effects of parenting on both moral courage and moral reticence for late adolescent girls, and self-esteem in fifth grade mediated the effects of parenting on moral reticence for late adolescent boys.