This systematic review of the relationships between principal characteristics and student achievement was created for educators, administrators, policy-makers, and other individuals interested in a comprehensive catalogue of research on relations between principal characteristics and student achievement. It synthesizes what is known about…

The objective of this report is to review studies that report language and literacy outcomes associated with preschool curriculum-based interventions. Results from studies reporting on interventions targeting preschool children from low-income families were included regardless of the specific type of program. Although the majority of preschool…

This meta-analysis found a minimal relationship between student achievement and educational expenditures except for direct instructional expenditures such as teachers' salaries and supplies. The amount spent is less vital than how the money is spent. (Compare gymnasium renovation with purchasing a new math program.) Nonschool factors may also be…