In addition to his work as art administrator, Morrison has had a distinguished career as a teacher. His first teaching appointment was as an art instructor at Roosevelt High School in Gary Indiana, 1965-67. He was Assistant Professor of Art at Fisk University, 1967–69; Associate Professor and Chair of Art, DePaul University, 1969–71; Associate Professor of Art (serving as Associate Dean, 1974–79) at the University of Illinois, Chicago, 1971-79. In 1979 he became only the fourth African American to be appointed full professor in the history of the University of Maryland, College Park (UMCP), where he taught until 1992. He was appointed Chair of the UMCP Art Department from 1989 until his departure in 1992. Morrison has also been a visiting faculty at several institutions, including as the visiting Chaves/King Professor, at the University of Michigan, Ann Arbor, with a joint appointment in the School of Art and the Institute for the Humanities, in spring 1990. He has lectured at numerous art schools and universities across the us, at universities in Cuba, Japan, Taiwan and Liberia, and at many universities across China. He holds the rank of Professor is in the Tyler School of Art, Temple University.