Book excerpt: "Peer leadership programs are not only pervasive, but also offer an effective and efficient means to advance students' adjustment, learning, development, and success. Student leaders, educators, and paraprofessionals make it financially feasible to run large-scale programs and are likely to be an even greater component of campus life and academic support in the future. The student outcomes of peer leadership are mutually beneficial: the students who provide the mentorship, leadership, or education gain as much, if not more, from the experience than the students they serve. Further, the range of positive gains from peer leadership has significant overlap with personal, civic, and social outcomes of college that are essential for success in a global society and economy."--Publisher.