Welcome to Sigma Pi
The Eta Delta Chapter of Sigma Pi Fraternity, International was formed in 1987 on Cal Poly campus. On May 21, 1988 it received its official charter. The Eta Delta Chapter was present at Cal Poly for 12 strong years when it died out in 1999. On March 3rd, 2006 the chapter was recolonized and after two years of hard work the colony received their charter on May 31st, 2008.