Sigma Chi's purpose is to promote the concepts of Friendship, Justice, and Learning; its mission statement is to develop values-based leaders committed to the betterment of character, campus and community. Sigma Chi's vision statement is "to become the preeminent collegiate leadership development organization—aligned, focused and living our core values".

Sigma Chi has a long history at The George Washington University. Originally founded in 1864, the Epsilon Chapter was recently re-chartered in September 2007.