Two versions of this Preserved Context Indexing System (PRECIS)/school library materials project, funded by the Ontario Ministry of Education, are presented: a narrative report and a technical report. Designed for interested readers who are not familiar with information science terminology, the narrative report summarizes the development of this computerized system for producing subject catalogs. The landmark PRECIS implementation at Aurora High School (Canada), other international applications, and catalog form/content development are discussed, leading to lists of immediate and long range objectives. The technical report treats the same topics with a more specific technical account including background, project setup and personnel, the automation process, products of the system, information dissemination, and systems development. Objectives are analyzed and their attainment evaluated, followed by recommendations. A glossary of terms used in the technical report, bibliography, a sample PRECIS printout, and a list of related conferences, workshops, and consultations complete the report. (SW)