<p>This study examines how a Jewish coming-of-age ritual—the bar/bat mitzvah—serves as a point of intersection between sacred practices and secular aspirations. Drawing on a multi-sited ethnography of seven families from non-Orthodox congregations in Silicon Valley, the research highlights how the bar/bat mitzvah serves both as a religious milestone and as a structured rehearsal for adulthood. Through participant observation, in-depth interviews, and innovative video diaries, the study reveals the multidimensional role of the bar/bat mitzvah. Families and religious institutions collaborate to transmit class-specific cultural capital—interpersonal and performative fluency, resilience and discipline, and leadership and social management competencies—through the preparation and execution of the ritual. Aside from transmitting Jewish values, the bar/bat mitzvah equips adolescents with competencies that extend beyond religious settings, preparing them to navigate broader social, academic, and professional domains. The communal nature of bar/bat mitzvah celebrations, marked by shared rituals and public recognition, also serves as a vehicle for transmitting the values and competencies associated with upper-middle-class life in American Jewish communities. By demonstrating how sacred rituals align with secular aspirations, this study contributes to qualitative sociology by reframing religion as a dynamic site of cultural reproduction and social adaptation.</p>