Mr. Sullivan is also a distinguished and enthusiastic teacher, whose teaching positions and residencies include the Seoul Art School - Korea, Chiao Tung University - Taiwan, Hanoi Conservatory - Vietnam, The Hong Kong Institute of Education, TAFE - S.A., University of W.A. and the W.A. Academy of Music, the Charles Darwin University, the Victorian College of the Arts, and the Elder School of Music.
He has also lectured at London's Royal Academy of Music, the Royal Scottish Academy of Music and Dance, and in 2003 gave his lecture-recital on Mozart's piano works at Oxford University.
Moreover, for 3 years he reviewed for the London-published International Journal for Music Education, which enjoys a readership of some 50 countries.