During his law school career he has also taught Legal Reasoning, Writing and Research and Principles of Legal Analysis, as well as upper-level electives. He has also served as the Law School's research specialist, aiding students with their basic legal research skills. Professor Epstein is the author of the current edition of the seven-volume Eckstrom's Licensing in Foreign and Domestic Operations, and a co-author of New York Evidence Courtroom Manual, Teacher's Handbook to The Lawyer's Craft, and New York Evidentiary Foundations.