This basic planning document is intended for use by the Albuquerque, New Mexico, board of education and school district administrative staff for educational programming and more effective utilization of school facilities. The results of this study tend to confirm previously established relationships between school population size and the cost of operating the schools as reflected in annual per pupil expenditures. Minimum and maximum school sizes based solely on economic considerations are intended to serve as guidelines for investigating individual school operations. The 1977-78 data presented here indicate a continuing enrollment decline in most Albuquerque schools. Tables of statistical data cover school size and pupil costs plus special education costs, school size and occupancy rates plus administrative and instructional costs, regular and special education student transportation costs, and summary data for elementary, junior high, and senior high schools. (Author/DS)