Professor Agata has been a faculty member of the Universities of Montana, Houston, and New Mexico. He has also been a visiting faculty member at the University of Wisconsin and New York University. He has served as interim dean of the Hofstra School of Law. His teaching areas include criminal law, trade regulation and evidence, and he has authored numerous articles in those areas. He was the co-director of the Northeast Regional Program of the National Institute for Trial Advocacy and the director of the Advanced Practice Institute, Hofstra's program for continuing legal education. He has been special counsel to the New York State Senate Minority and consultant to the New York Charter Revision Commission. In addition, Professor Agata was reporter-consultant to Action Unit Number 7 of the New York State Bar Association, which was charged with studying and making recommendations for the improvement of the New York State's criminal justice system. He served as senior counsel to the National Commission on Reform of Federal Criminal Laws (the Brown Commission) just prior to coming to Hofstra.
Professor Agata has been elected to membership in the American Law Institute and is a Life Fellow of the American Bar Foundation. Presently, he is a member of the State Antitrust Law Committee of the ABA Section on Antitrust Law. He is a member of the Executive Committee of the Criminal Justice Section, the Committee to Study New Sentencing Legislation, chair of the Committee on Revision of the Penal Law and has been vice chair of the Committee on the Donnelly Act of the New York State Bar Association. He has served as a member of the Committee on Trade Regulation and the Council on Criminal Justice of the Association of the Bar of the City of New York, as the chairman of the Criminal Law Section of the Association of the American Law Schools, and as chairman of the Committee on Research of the American Bar Association's Section on Criminal Law. Professor Agata is also vice chair of the American Bar Association Senior Lawyers Division Committee on Professionalism.