The Project Grant Information System (PGIS) is a computerized information indexing and retrieval system which supports the U.S. Office of Education. Its purpose is to provide OE officials with up-to-date information about the Office's discretionary grant programs and projects. The purpose of the Taxonomy is to provide: (1) those individuals who are responsible for inputing data into the information system with the means for categorizing and indexing incoming proposals and contracted projects; and (2) those individuals who are interested in extracting specialized data from the system with the means for obtaining that information. The use of the Taxonomy for "input" purposes is directed toward satisfying the "output" requirement of the users. Thus, the primary function of the PGIS Taxonomy is to provide OE management and other personnel with specialized access to data contained in the system. This report contains: a brief description of development of the Taxonomy; a comprehensive and detailed explanation of the operating procedures which must be utilized by those who wish to retrieve information from the system; a complete list of the more than 1400 terms contained within the Taxonomy; and a set of detailed definitions for all terms. (Author/SJ)