Choose which sorority you would like to bring to your school. There are many ways to choose a sorority, but ideally your choice will reflect your personal and social values and the needs of your campus. Many of the 26 sororities that are members of the National Panhellenic Conference, and the four in the National Pan-Hellenic Council, are founded on principles of loyalty, sisterhood and social commitment; each has a unique motto and pledge. Sororities also exist that center around specific nationalities or religion. You may want to choose one or two backup sororities in case your first choice is not approved.
Contact the Greek government system already in place at your school; this may be the National Panhellenic Conference or the National Pan-Hellenic Council. Other less common governing bodies include the National Association of Latino Fraternal Organizations, National APIA Panhellenic Association, National Multicultural Greek Council, and the United Council of Christian Fraternities & Sororities. Inform them of your desire to bring a new sorority to your school, and complete their application process.
Simultaneously, contact the national headquarters for the sorority you want to bring to your school and complete its application process. This will vary by sorority, but if your request is approved, your group will most often be granted "colony" status, the preliminary step to becoming an official sorority.
Complete official chapter requirements. After becoming a colony, the new sorority extension must complete specific requirements laid out by the sorority to become an official chapter. For example, Theta Phi Alpha, a sorority member of the National Panhellenic Conference, has a specific 19-step plan for colonies to becomes a chapter, ranging from establishing membership minimums (30 girls) to paying appropriate fees to a variety of sorority education programs.