Objectives of this paper are: (1) to provide a practical point of view, based on experience of library and audiovisual practitioners, for expanding secondary school library programs into instructional materials center programs as demanded by instructional programs involving flexible scheduling, inquiry, and independent study; (2) to provide an annotated bibliography of pertinent comment and illustrations from school administration, architecture, library, and audiovisual journals, books, and media; and (3) to make available to school administrators and planners selected sources on these topics. The instructional materials center, as defined for this discussion, is a library with broader than traditional purpose, housing more diversified and extensive collections of materials. It is staffed by leaders with varied general experience and specializations in library, curriculum, and media, who work supportively with staff and students. Topics discussed include personnel, program, materials, the indexing system, budget, and housing spatial allocation. An annotated bibliography of 24 items is appended. (Author/JB)