Professor Gregory, a former vice dean of the Law School, teaches primarily in the areas of matrimonial and family law. He is an elected member of the American Law Institute, and served as an adviser to the Institute's Principles of the Law of Family Dissolution: Analysis and Recommendations. He is a fellow of the American Bar Foundation and the New York Bar Foundation, and a member of the board of editors of the Family Law Quarterly. He is the author of The Law of Equitable Distribution; Understanding Family Law(with Swisher & Scheible); and Property Division in Divorce Proceedings: A Fifty State Guide (with Richards and Wolf); and he has written extensively in the areas of juvenile law, family law and constitutional law. He is a former chair of the Section on Family and Juvenile Law of the Association of American Law Schools and of the Section on Minority Groups.
Following the general practice of law in Harlem and an association with a New York City firm specializing in commercial and labor law, Professor Gregory served as an assistant attorney general in the Litigation Bureau of the New York State Department of Law. Subsequently, he was assistant to the commissioner for departmental legal affairs in the Nassau County Department of Public Welfare and later served as executive director of Nassau Law Services, Inc. Professor Gregory is the former general counsel and executive director of New York City's Community Action for Legal Services, Inc., the largest legal services program in the nation. Following his appointment to the Hofstra faculty, he was among the initial directors of the Community Legal Assistance Corporation, the school's neighborhood law office and first clinical program, where he worked as an attorney.
Professor Gregory has held appointments as lecturer in Law and Social Welfare at the School of Social Work at Adelphi University and at New York University School of Continuing Education. He is a director and vice chair of the National Center for Law and Economic Justice, and former chair of the Committee on Matrimonial Law of the Association of the Bar of the City of New York. Professor Gregory received the Law Faculty Distinguished Service Award for 1978-79, and in 1982 received the Outstanding Faculty Award presented by the Law School's chapter of the Black American Law Students' Association for his untiring dedication and service. In 1984 he was selected to deliver the third annual Hofstra University Distinguished Faculty Lecture.