High school non-completion remains a stubborn reality in urban communities where low-income people of color are concentrated, putting young adults at risk for long-term economic instability. Research shows that self-efficacy positively affects school outcomes and that in-school experiences influence school completion. However, little is known about the joint effects of self-efficacy and aspects of the school context on school-leaving. This study gathered data from a sample of 200 young adults recruited through a participatory action research project in a low-income, predominantly Latina/o urban community. Using descriptive and inferential statistical analyses, this study examines relationships between academic and general self-efficacy, dropout status (non-leavers, temporary-leavers, and permanent-leavers), and school context. Results showed few differences between temporary- and permanent-leavers, although leavers had lower academic self-efficacy but higher general self-efficacy than non-leavers. Moreover, grades and caring relations with adults explained the difference in self-efficacy by dropout status. This article discusses implications for research and practices on school completion, particularly for young adults living low-income, racially/ethnically minoritized urban communities.