[1] Her research focuses on the political, social, and cultural history of Classical Athens, Athenian tragedy, ancient immigration, ancient theories of race and ethnicity, and the reception of those theories in modern race science.

[8][9][10] Her current project, commissioned and under contract with Johns Hopkins University Press, is a book on race in classical antiquity and its contemporary legacy.

[17] Alongside her research and teaching, Kennedy also writes and publishes widely in non-traditional formats, including her personal blog entitled 'Classics at the Intersections'.

[1] This blog is described by Kennedy herself as 'random thoughts of a Classicist on ancient Greek and Roman culture and contemporary America'.

Kennedy was also a 'talking head' contributor to the History Channel's series Clash of the Gods (2009), in the episodes "Minotaur", "Hercules", and "Medusa".