Alpha Phi Omega is a national co-ed service organization that is dedicated to serving humanity through our three cardinal principles  of Leadership, Friendship, and Service. There are currently over 350 active chapters nationwide. Purdue's chapter, the Alpha Gamma chapter, was started in 1931. Since then our chapter has grown from fifteen members to over 100. Purdue's Alpha Gamma chapter has always ranked as one of the top chapters in the national organization in its activities and membership.