Eugene (OR) School District 4J is experiencing declining enrollments on a district-wide basis, but these declines have not been evenly distributed throughout the district. Schools in the Central city and older neighborhoods are experiencing declines, while schools in newer neighborhoods at the periphery are generally more crowded. At some future time, District 4J may have to decide to build new schools in some areas and close schools in others. Theories for social demography, urban studies, urban socioeconomic structure, neighborhood change, and land use, and data from population surveys, new housing surveys, local land use plans, building permits, and post school enrollment are used as a basis for recommendations. Recommendations for action include the acquisition of a site on Goodpasture Island, the selling of two older sites, and the involvement of school district personnel in local land use planning activities. (Author/BW)