Kyung Sun Lee studied at Seoul National University, the Peabody Conservatory and the Juilliard School, under Sylvia Rosenberg, Robert Mann and Dorothy Delay. She has won many prizes, among others at the Concours de Montréal in 1991, the Queen Elisabeth Competition in 1993 and the Tchaikovsky Competition in 1994. After a period as assistant professor at the Oberlin Conservatory in 2001 and associate professor at the University of Houston in 2006, she was a professor at Seoul National University from 2009 to 2022 and also taught for two summers at the Aspen Music Festival. Kyung Sun Lee has been invited to perform at the chamber music festivals of Seattle and Marlboro and was a member of the KumHo/Asiana String Quartet. In recent years, she has been invited to serve as a jury member at the Tibor Junior Competition in Switzerland, the Singapore Competition and the Joseph Joachim Competition in Hanover. She is also the artistic director of the Changwon International Chamber Music Festival and the Seoul Virtuosi Chamber Orchestra. In 2023 Kyung Sun Lee was appointed Dorothy Richard Starling Chair in Violin Studies at the Indiana University Jacobs School of Music.