Select Option SDSU CP Pomona CP SLO UCR CSUSM Welcome to The Official Alpha Pi Sigma Website The Alpha Chapter that started Alpha Pi Sigma was established on March 10, 1990 at San Diego State University. Since 1990 Alpha Pi Sigma has established three additional chapters. The Beta Chapter was established on March 1, 1996 at California State Polytechnic University, Pomona. Susana Munoz, a member ...