The current study examined adolescent persistence as a mediator between authoritative parenting and adolescents' school engagement, prosocial behavior, and delinquency. Participants were taken from Time 2, 3, and 4 of the Flourishing Families Project and included 325 two-parent families with a child between the ages of 11 and 14 at Time 2 (mean age = 12.34, "SD" = 1.06, 52% female), 96% of whom had complete data for Time 4 (2 years later). Analyses suggested that authoritative fathering at Time 2 (but not mothering) was positively associated with adolescent persistence at Time 3, and adolescent persistence was positively related to school engagement and negatively related to delinquency at Time 4. Discussion focuses on the importance of the socialization of persistence during adolescence. (Contains 1 figure and 1 table.)