American Ballet Theatre (ABT) is a classical ballet company based in New York City. Founded in 1939 by Lucia Chase and Richard Pleasant, it is recognized as one of the world's leading classical ballet companies. Through 2019, it had an annual eight-week season at the Metropolitan Opera House (Lincoln Center) in the spring and a shorter season at the David H. Koch Theater in the fall; the company tours around the world the rest of the year. The company was scheduled to have a 5-week spring season at the MET preceded by a 2-week season at the Koch Theater beginning in 2020. ABT is the parent company of the American Ballet Theatre Jacqueline Kennedy Onassis School, and was recognized as "America's National Ballet Company" in 2006 by the United States Congress. History In 1939 Pleasant and Chase committed to the creation of "a large scale company with an eclectic repertory". The pair and a small group from Mordkin Ballet formed Ballet Theatre. Their new company's first performance was on 11 January 1940. Chase began developing the company's repertoire of well-known full-length ballets, as well as original works, amidst financial issues. In 1945 Oliver Smith joined Ballet Theatre and became co-director with Chase. In 1957 the company changed its name to American Ballet Theatre. It continued to emphasize ballet classics, yet remained challenged by financial issues. During the 1960s and 1970s, the company's prospects brightened due to more favorable private funding. During this period, American Ballet Theatre shifted its ballet focus to the recruitment of star performers. In 1977, the company began its spring season at the Metropolitan Opera House, its new official venue. Mikhail Baryshnikov in 1980 became Artistic Director for American Ballet Theatre. Baryshnikov staged, restaged, and refurbished numerous classical ballets and, according to the company, strengthened their classical tradition. Baryshnikov was replaced in 1989 by Jane Hermann and Oliver Smith, who remained as Artistic Directors until 1992, when Kevin McKenzie received the appointment. McKenzie satisfied the demands of the traditional ballet audience by prioritizing full-length narrative ballets. He also succeeded in keeping the company afloat during financially unstable times. In 2004 he established an official associate ballet school, the Jacqueline Kennedy Onassis School. After a long period of no in-house choreographer, McKenzie appointed Alexei Ratmansky as "Artist in Residence" in January 2009. McKenzie stepped down from the company in late 2022, as announced in 2021. Susan Jaffe was