Sigma Alpha is a professional agricultural sorority that promotes scholarship, leadership, service and fellowship among its members. The sorority was founded in 1978 at the Ohio State University by five women who wanted an alternative to the social Greek sorority system. Since that time, Sigma Alpha has become a national organization consisting of more than 80 chapters, comprised of undergraduate and alumnae members. Today, more than 19,000 members have been initiated into Sigma Alpha Sorority. We’re growing steadily as others in agriculture learn about us.