The Isadora Duncan International Institute, Inc., is a 501 (c) 3 non-profit educational organization founded in 1977 by dancer Maria-Theresa Duncan, Isadora Duncan’s adopted daughter and student, and Kay Bardsley, noted dance historian and scholar. The IDII is a global dance organization on five continents whose mission is to preserve of the choreographic and philosophical legacy of Isadora Duncan, to enhance education through classical studies in art and movement, and to maintain the archive of materials from founder, Maria-Theresa Duncan.