 Judge Mazzariello was an experience attorney being ans Assistant District Attorney in Brooklyn, his founding of the nonprofit East New York Legal Services, and his role as Chief Prosecutor for the New York City Board of Education during the Giuliani administration.The City University of New York School of Law website cites him as an alum.The East New York native worked as an assistant district attorney in Brooklyn from 1990 to 1993 and chief prosecutor for the Board of Education from 1995 to 1998.