Browse NIEER Research


Access to quality prekindergarten varies across and within states.

Quality and Curriculum

Learn about the relationship of preschool quality to short- and long-term child outcomes.


Learn what the research has to say about assessments of preschool children and preschool programs.

Special Education

Special education in preschool and inclusive preschool programs.

Economics and Finance

Find out about the economic benefits of preschool as well as the costs of preschool programs and facilities.

State Pre-K Evaluations

Information and state-specific research on state-funded preschool programs.

English Language Learners

Gather information on what is known about English language learners in preschool.

State Programs

Aspects of state preschool programs including variations in state delivery systems.

Governance and Accountability

Find the latest information on state and local systems of governance and accountability


Teacher quality, teacher salaries and compensation, and teacher training and professional development.


Resources related to outcomes for children who attend preschool.

Universal and Targeted

Gather information about preschool programs targeted to serve at-risk children versus access for all children.