During an expansion and colonization process that lasted two years, Theta Zeta was installed as the sixth NPC group on the Washington and Lee campus. In a process that required fully participating in formal recruitment in January 2009, this unique colonization brought together collegians from eight chapters and alumnae from across the nation to recruit the charter group. On March 7, the chapter was installed with 85 charter members. They became active on campus even before installation, launching a pop tab drive and collecting items for the Ronald McDonald House. They delivered cookie cakes to the fraternities and flowers to the sororities to get acquainted with the other Greeks. Members participated in more than 30 campus organizations. The university built the chapter a new house that was completed in 2011.