Professor Prag has been teaching at the Drucker School since 1986. He also teaches at Harvey Mudd College. He serves on the Board of Directors of Mount San Antonio Gardens, a large nonprofit retirement community in Claremont. He has also been actively involved in several start-ups. Professor Prag has won several teaching awards in his years at the Claremont Consortium. He also teaches financial analysis in the Executive Leadership Potential program at Southern California Edison.