Since 1973, hundreds of peer mentors through the HP Peer Mentor Leadership and Development Program (PMLDP) have connected, engaged, and led prospective, incoming, and first year, Saint Mary’s College students, worked directly with the poor and marginalized, transformed themselves, and created a culture of service and social justice education at the college. Fifteen peer mentors invest approximately 250+ hours of direct service to the college, the HP program, and mentees while simultaneously participating in 90+ hours of learning and development. Peer mentors are involved in a training retreat soon after being hired from a competitive pool of applicants and after participating in a rigorous interview process, which includes essays and letters of recommendation. The 2-day retreat begins the leadership and development process that continues in the summer just before the Summer Academic Institute for Leaders and Scholars (SAILS) as a 1-week series of workshops, and throughout the academic year in monthly leadership development sessions.