Common Core of Data

Common Core of Data
Name	Common Core of Data
Producer	National Center for Education Statistics
Country	United States
Started	1980s
Frequency	Annual
Subject	Public elementary and secondary schools
Access	Public datasets

Common Core of Data The Common Core of Data is a federal statistical program that compiles a comprehensive universe file of public elementary and secondary education data in the United States. Operated by the National Center for Education Statistics, the dataset provides annual school-, district-, and state-level records used by researchers, policymakers, and education organizations. It supports longitudinal analyses across federal initiatives and complements datasets from agencies such as the Bureau of Labor Statistics, U.S. Census Bureau, and federal reports tied to the No Child Left Behind Act and the Every Student Succeeds Act.

Overview

The program assembles administrative data submitted by state education agencies, producing standardized files that enable cross-state comparison and time series analysis. Key stakeholders include the U.S. Department of Education, state departments such as the California Department of Education, the New York State Education Department, and advocacy organizations like the American Institutes for Research and Education Trust. The CCD interacts with national statistical efforts including the National Assessment of Educational Progress and complements longitudinal studies like the Early Childhood Longitudinal Study and the High School Longitudinal Study of 2009.

Data Collection and Scope

Data collection covers public school districts and schools, including enrollment counts, staffing, fiscal data, and geographic identifiers. Submissions originate from entities such as the Texas Education Agency, Florida Department of Education, and Illinois State Board of Education, aggregated to form files comparable to datasets from the Integrated Postsecondary Education Data System and administrative registers used by the Social Security Administration for geocoding. The CCD records include school names tied to boundaries similar to those used by the U.S. Census Bureau TIGER/Line files and coordinate references that facilitate linkage with the National Center for Health Statistics urban-rural classifications and the National Land Cover Database.

Data Products and Access

Published products span the School Locale file, State Nonfiscal Survey, and District Nonfiscal Survey, along with Finance Surveys and special tabulations. Data are disseminated via platforms analogous to the Federal Reserve Economic Data portals and research repositories used by the Urban Institute and Brookings Institution. Users access files through tools modeled on interactive systems employed by the Institute of Education Sciences and data warehouses comparable to the Inter-university Consortium for Political and Social Research. CCD outputs are formatted to enable import into statistical packages favored in projects by the RAND Corporation and the American Educational Research Association.

Methodology and Standards

Reporting follows standardized item definitions, coding schemes, and quality checks established by the Office of Management and Budget statistical directives and federal data standards. The CCD employs classification systems akin to the North American Industry Classification System for organizational coding and mirrors geospatial best practices used by the U.S. Geological Survey. Data processing incorporates imputation protocols and edit rules comparable to those used by the National Center for Health Statistics and aligns with privacy frameworks influenced by the Family Educational Rights and Privacy Act and guidance from the Privacy Office of the U.S. Department of Education.

Uses and Impact

Researchers at institutions such as Harvard University, Stanford University, and Columbia University leverage CCD files for studies on enrollment trends, staffing equity, school consolidation, and finance distribution. Policymakers referencing analyses from the Congressional Budget Office and reports by the Government Accountability Office use CCD-derived indicators to inform state funding formulas and accountability systems. Nonprofit organizations including the Education Trust, Council of Great City Schools, and the National School Boards Association use CCD data to advocate policy and develop technical assistance. CCD linkages enhance cross-study inference when combined with outcomes from the Programme for International Student Assessment and administrative wage records from the Bureau of Labor Statistics.

Limitations and Criticisms

Critiques center on completeness, comparability, and timeliness: states vary in submission detail, geographic granularity, and fiscal classifications, echoing issues noted in cross-jurisdictional data reviewed by the Pew Research Center and the National Academies of Sciences, Engineering, and Medicine. Users caution about misalignment with local reporting systems used by entities like the Chicago Public Schools and Los Angeles Unified School District, and about measurement error documented in audits by the Office of Inspector General (U.S. Department of Education). Privacy advocates referencing positions from the Electronic Frontier Foundation and the ACLU emphasize risks when CCD files are linked to personally identifiable records, prompting adherence to data-use agreements and suppression rules comparable to those enforced by the National Center for Education Statistics.

Category:United States statistical services Category:Education databases