Dr. Joyner has taught at UMass Boston and Amherst, Roxbury Community College and Brandeis University. She teaches African American History and Ethnic Studies courses.
She is a member of American History International and the American Historical Association. She was a 2005 Honorable Mention by the Ford Foundation in Washington DC's National Academies on Science, Engineering and Medicine and is currently working on a book about the education of Deaf African Americans after the Civil War to the 1954 historic Brown v Board of Education case. She is an avid reader and loves putting together complicated jigsaw puzzles.