His research is broadly focused on student development and student success in postsecondary education and explores questions related to the social construction of gender and race on college campuses, college men and masculinities, and racial/ethnic disparities in college student outcomes. In his role as co-director of M2C3, Harris partners with community colleges across the United States to conduct research and design interventions to facilitate student achievement among men who have been historically underrepresented and underserved in postsecondary education. Harris has authored or co-authored more than 40 scholarly publications. His peer-reviewed works have been published in leading journals for higher education and student affairs research and practice.