This paper describes the objectives and organization of the Middle Management Center (MMC), a university-based interdisciplinary resource team dedicated to improving school management practices through involvement with school principals. The author, who is also director of the MMC, first discusses the place of principals in school administration and their need for improved management training and then describes how the MMC was specifically designed to meet this need. In the final section of the paper, the author presents a series of statements that summarize the major findings resulting from a case analysis of the MMC's first operational year. (JG)