Chi Alpha Omega was founded as a co-ed Christian fraternity at East Carolina University in Greenville, North Carolina. The purpose of Chi Alpha Omega was to assemble Christian students in a Christ-centered brotherhood to enjoy Christian fellowship, service, accountability, and social activities

The active brothers (both male and female) of the Beta Chapter of Chi Alpha Omega at North Carolina State  University voted to form Sigma Alpha Omega® in hopes of benefiting both the fraternity and the sorority. Both groups committed to living according to the ideals of Christ and His Word, uplifting each other through fellowship and service, and bringing the love of Christ to North Carolina State University.

Sigma Alpha Omega®  Christian Sorority, Inc. was officially recognized as a national non-profit organization under the laws of North Carolina.

The Nu Chapter of Sigma Alpha Omega was founded at Western Carolina University with 29 sisters in our founding class!! We are the only Christian Sorority on Western Carolina University's campus.