This bulletin was prepared to acquaint superintendents with changes that may occur in their administrative patterns because of the effect the steadily decreasing number of live births is having on the school population. The available methods of predicting future enrollments in a district are outlined, and the effects a decline may have on facility use, staffing, operational efficiency, and curriculum design are discussed. Suggestions are given for possible alternative uses for buildings and for a building's disposal in the case that a district will experience an enrollment decline sufficient to justify these steps. The political and legal aspects of school closings are examined and recommendations are made. Appendixes present the cohort survival method of projecting enrollment and the material on school closing prepared by the Birmingham (Michigan) board of education (including criteria for school closing and alternatives for use of classroom space). A bibliography is also included. (Author/IRT)