In the study of the school library supervisor, the universe was made up of those school systems in the United States with enrollments of 25,000 or more and identified as having the position of school library supervisor. Questionnaires were sent to all 150 supervisors thus identified and 99 returned the questionnaire. Full detail of sample choice and design and an analysis of the returns are contained in the Appendix. It was concluded that, unlike the other administrative groups, the school library supervisor is clearly oriented toward a single direction for change--the multimedia concept. The conventional wisdom of school librarianship appears to equate progress with more comprehensive control of nonbooks as well as books--to swell the inventory, and so to add films, records and tapes. To the degree that professional perspectives remain absorbed in expanding collections, more zeal inevitably attends the collecting function than motivates expansion of service to clients. (Other parts of this study are available as LI 003071, LI 003072 and LI 003074) (Author/NH)