Long Beach Unified School District (LBUSD) has been nationally recognized as a consistently high-functioning district for more than 2 decades. The district educates approximately 72,200 students, from preschool to high school, in its 86 schools. Almost 90% are students of color, with 57% Latino/a and 12% African American, while 65% are from economically disadvantaged families and 15% are English learners. LBUSD is one of seven districts studied by researchers at the Learning Policy Institute in a mixed-methods study that sought to learn from positive outlier districts in which African American, Latino/a, and White students did better than predicted on California's math and English language arts tests from 2015 through 2017, after accounting for differences in socioeconomic status. This in-depth case study describes the critical practices and policies within LBUSD that have promoted student learning, especially among students of color, in the context of the Common Core State Standards (CCSS) and the deeper learning they seek to foster. Through an analysis of interview, documentary, and observational evidence, this case study describes key factors that enabled student success in LBUSD.