In 1945, Dunham opened and directed the Katherine Dunham School of Dance and Theatre near Times Square in New York City after her dance company was provided with rent-free studio space for three years by an admirer, Lee Shubert; it had an initial enrollment of 350 students.
The program included courses in dance, drama, performing arts, applied skills, humanities, cultural studies, and Caribbean research, and in 1947 it was expanded and granted a charter as the Katherine Dunham School of Cultural Arts. The school was managed in Dunham’s absence by one of her dancers, Syvilla Fort, thrived for about 10 years, and was considered one of the best learning centers of its type at the time. Schools inspired by it later opened in Stockholm, Paris, and Rome by dancers trained by Dunham.
Her alumni included many future celebrities, such as Eartha Kitt, who, as a teenager, won a scholarship to her school and later became one of her dancers before moving on to a successful singing career. Others who attended her school included James Dean, Gregory Peck, Jose Ferrer, Jennifer Jones, Shelley Winters, Sidney Poitier, Shirley MacLaine and Warren Beatty. Marlon Brando frequently dropped in to play the bongo drums, and jazz musician Charles Mingus held regular jam sessions with the drummers. Known for her many innovations, Dunham developed a dance pedagogy, later named the Dunham Technique, that won international acclaim and that is now taught as a modern dance style in many dance schools.
By 1957, Dunham was under severe personal strain that was affecting her health, and she decided to live for a year in relative isolation in Kyoto, Japan, where she worked on writing autobiographies of her youth. Throughout her career, she occasionally published articles about her anthropological research (sometimes under the pseudonym of Kaye Dunn) and sometimes lectured on anthropological topics at universities and scholarly societies.
In 1964, Dunham settled in East St. Louis and took up the post of artist-in-residence at Southern Illinois University in nearby Edwardsville. There she was able to bring anthropologists, sociologists, educational specialists, scientists, writers, musicians, and theater people together to create a liberal arts curriculum that would be a foundation for further college work. One of her fellow professors with whom she collaborated was architect Buckminister Fuller.
The following year, 1965, President Lyndon B. Johnson nominated Dunham to be technical cultural adviser—that is, a sort of cultural ambassador—to the government of Senegal in West Africa. Her mission was to help train the Senegalese National Ballet and to assist President Leopold Senghor with arrangements for the First Pan-African World Festival of Negro Arts in Dakar (1965–66). Later she established a second home in Senegal and occasionally returned there to scout for talented African musicians and dancers.
In 1967, Dunham opened the Performing Arts Training Center (PATC) in East St. Louis as an attempt to use the arts to combat poverty and urban unrest. It served as a catharsis after the 1968 riots, during which she encouraged gang members in the ghetto to vent their frustrations with drumming and dance. The PATC drew on former members of Dunham’s touring company as well as local residents for its teaching staff. While trying to help the young people in the community she was even jailed herself, making international headlines which quickly embarrassed local police officials to release her. She also continued refining and teaching the Dunham Technique to transmit that knowledge to succeeding generations of dance students, and lecturing at annual Masters’ Seminars in St. Louis that attracted dance students from around the world every summer until her death. She also established the Katherine Dunham Centers for Arts and Humanities in East St. Louis to preserve Haitian and African instruments and artifacts from her own personal collection.
In 1976, Dunham was guest artist-in-residence and lecturer for Afro-American studies at the University of California, Berkeley. In 1978, an anthology of writings by and about her, also entitled Kaiso! Katherine Dunham, was published in a limited, numbered edition of 130 copies by the Institute for the Study of Social Change.