High-quality state early intervention (IDEA Part C) data systems enable state staff to use data to improve their programs and results for children and families. This Brief provides an overview of states’ early intervention data system capacity and describes differences based on lead agency type.

Read the brief and learn more about key findings.

Check out the interactive 2021 State of the State Maps.

Intended Audience: IDEA Part C and Part B Section 619 Coordinators, IDEA Part C and B Data Managers, parent leaders, and others working to improve state capacity for evidence-based data systems.

Published May 2025.