School District Characteristics 2017-18

The National Center for Education Statistics’ (NCES) Education Demographic and Geographic Estimate (EDGE) program develops annually updated school district boundary composite files that include public elementary, secondary, and unified school district boundaries clipped to the U.S. shoreline. School districts are special-purpose administrative units designed by state and local officials to provide public education for local residents. District boundaries are collected for NCES by the U.S. Census Bureau to develop demographic estimates and to support educational research and program administration. The NCES Common Core of Data (CCD) program is an annual collection of basic administrative characteristics for all public schools, school districts, and state education agencies in the United States. These characteristics are reported by state education officials and include directory information, number of students, number of teachers, grade span, and other conditions. The administrative attributes in this layer were developed from the 2017-2018 CCD collection. For more information about NCES school district boundaries, see: https://nces.ed.gov/programs/edge/Geographic/DistrictBoundaries. For more information about CCD school district attributes, see: https://nces.ed.gov/ccd/files.asp. Notes: -1 or M Indicates that the data are missing. -2 or N Indicates that the data are not applicable. -9 Indicates that the data do not meet NCES data quality standards. All information contained in this file is in the public domain. Data users are advised to review NCES program documentation and feature class metadata to understand the limitations and appropriate use of these data.美国国家教育统计中心（National Center for Education Statistics，NCES）的教育人口与地理估算（Education Demographic and Geographic Estimate，EDGE）项目每年更新学区边界综合文件，该文件包含经美国海岸线裁剪的公立小学、中学及联合学区边界。学区是由州与地方行政官员设立的专用行政单元，旨在为本地居民提供公立教育服务。美国人口普查局为NCES收集学区边界数据，用于开展人口估算及支持教育研究与项目管理。 NCES通用数据核心（Common Core of Data，CCD）项目负责年度采集美国境内所有公立学校、学区及州教育机构的基本行政特征数据，此类数据由州教育官员上报，涵盖机构名录信息、在校生人数、教师人数、学段覆盖范围及其他相关状况。本图层中的行政属性数据源自2017-2018年度的CCD数据集采集结果。 如需了解更多NCES学区边界相关信息，请访问：https://nces.ed.gov/programs/edge/Geographic/DistrictBoundaries。如需了解更多CCD学区属性相关信息，请访问：https://nces.ed.gov/ccd/files.asp。 备注：-1或M表示数据缺失；-2或N表示数据不适用；-9表示数据未达到NCES的数据质量标准。本文件包含的所有信息均属于公共领域。建议数据使用者查阅NCES项目文档及要素类元数据，以了解此类数据的局限性与合理使用方式。