Stanford Education Data Archive (SEDA 2025.1)
Version 2025.1; 2022-2025 pooled evidence preferred, 2009-2019 historical fallback- Data
- All-student administrative-district combined math-and-reading Grade Year Standardized learning-rate estimates, using Stanford's recommended Empirical-Bayes estimate and adjusted standard error.
- What it tells us
- Shows average grade-to-grade progress among tested public-school cohorts in grades 3-8, where 1.0 is one 2019-national-reference grade level per grade. It is not achievement level, a calendar-time trend, or causal school effectiveness.