Replication Data for: From Child Cohorts to Public Schools: Enrollment Tracks Demographic Change More Closely Than Staffing Across U.S. Counties, 2009-2023

Replication materials for a national county-year study comparing how resident child cohorts align with grades 1-5 public enrollment and elementary teacher full-time-equivalent staffing from 2009 through 2023. The archive contains analysis-ready public-data-derived panels, Python code, generated tables and figures, source documentation, and file checksums. It reproduces paired common-sample models, age-timing checks, county-trend and first-difference specifications, common-support horizon profiles, system-size comparisons, geographic validation, and out-of-sample forecasts. The files contain aggregate geographic and school records and no individual student, teacher, household, or birth records. No API key or credential is included.