Incorporated in 1977, Kappa Delta Phi, National Affiliated Sorority's roots go back to 1971 when the first chapter was chartered at Husson College in Bangor, Maine, under the guidance of Kappa Delta Phi National Fraternity. The purpose of the sorority was to allow the spirit and principles of the fraternity to be generated among young women in the same college atmosphere. The two would share similar principles but operate separately as their own organizations. In time the sorority flourished and other chapters followed, springing up at colleges and universities throughout the Northeast on over 18 campuses, from the tip of Maine to Southern Pennsylvania. The founding principles of this National Sorority are to develop the highest philanthropic ideals possible within each chapter and individual sister. Providing service to others is the cornerstone on which this Sorority was built. We continue to build on that through various service projects and activities for both the campus and surrounding communities. Kappa Delta Phi nas provides a vehicle for the young colegiate to learn and expand their knowledge of leadership, management skills, and finances in running a successful chapter. Once graduating, the Alumna may opt to join the National Alumnae Association, putting her in touch with a network of women that can be a valuable networking tool in today's working world.

Each spring, Kappa Delta Phi nas holds a National Convention in conjunction with Kappa Delta Phi National Fraternity. This event is one of the highlights of the academic year. At this time, chapters and individual sisters are recognized for their outstanding achievements in a variety of areas, including the National Scholarship. Chapters return home to their campuses with trophies, plaques, and certificates denoting their achievements. This convention is unique from other National Sororities in that it is the only one that invites each and every sister, active or alumnae, to participate.