Sitting just north of the U.S.-Mexico border, the Chula Vista Elementary School District (CVESD) supports teaching and learning in California's largest elementary school system. Across its 47 schools, CVESD educators serve over 30,000 students each day, 90% of whom are students of color and over one third of whom are English learners. CVESD 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 CVESD 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 CVESD.