This publication presents findings from a national study conducted by AAC&U researchers to investigate the impact of engagement in high-impact practices on traditionally underserved populations (defined here as first-generation, minority, transfer, and low-income students).The mixed-method analysis includes student-level data on engaged learning at thirty-eight participating institutions-from the state higher education systems in California, Oregon, and Wisconsin-drawn from the National Survey of Student Engagement (NSSE), as well as qualitative data obtained through student focus groups held at nine selected campuses. This report serves as a guide for campus-based inquiry to further our understanding of underserved student engagement with high-impact practices. The publication also includes a toolkit on assessing equity in high-impact practices developed by the Center for Urban Education at the University of Southern California. This project is funded by TG Philanthropy. [The "Assessing Equity in High-Impact Practices Toolkit" was developed by Estela Mara Bensimon, Alicia C. Dowd, and Debbie Hanson, Center for Urban Education.]