This catalog is intended to serve as a guide to data gathered by the offices and bureaus at the central headquarters of the New York City Public Schools. Its purpose is to provide a comprehensive overview of the different kinds of information gathered on a regular basis, and should be viewed as a tool, which in association with the Metropolitan Educational Development and Research Project (MEDARP) staff, can help the user to track down helpful data and put him or her in contact with knowledgable sources. All users of this catalog are urged to contact the MEDARP office before attempting to obtain any of the data discussed within it. Information in the catalog is presented as follows: (1) a users' guide; (2) an index of offices and divisions covered by the catalog; (3) a subject index; and (4) a glossary of acronyms and terms. (Author/GK)