In 1946, the City and County of San Francisco agreed to accept interns from CORO. Thus, the first Internship in Public Affairs began in January 1947 with twelve participants, eleven of whom were veterans. This pioneering class included both a woman and an African American participant, a notable level of diversity for this period in history.
The Internship in Public Affairs sent the CORO Fellows into rotating field assignments in government, business, labor unions, and political campaigns. Each Friday, they gathered to share their experiences, connect with each other, and participate in seminars. Even in its first inception, this innovative approach to training had become a success. As it evolved and gained momentum, young leaders (including U.S. Senator Dianne Feinstein) were eager to participate in this novel program.