Roger C. Park is the co-author of the Waltz & Park Evidence casebook, the author of a textbook on evidence (Trial Objections) and the author of numerous articles in law journals. He has also co-authored interdisciplinary journal articles on law and psychology. He is the past chair of the Evidence Section of the American Association of Law Schools. 

Professor Park has written over a dozen computer lessons on evidence, civil procedure (with Doug McFarland) and professional responsibility (with Kenneth Kirwin). His evidence lessons won the EDUCOM Higher Education Software award in 1991.

Formerly the Fredrikson & Byron Professor of Law at the University of Minnesota, Professor Park is now the James Edgar Hervey Professor of Law at Hastings College of the Law, University of California. He has also taught as a visiting professor at Boston University Law School, Michigan Law School, and Stanford Law School and as an adjunct at Wellesley College.