Journal Article

A Meta-Analysis of Class Sizes and Ratios in Early Childhood Education Programs: Are Thresholds of Quality Associated With Greater Impacts on Cognitive, Achievement, and Socioemotional Outcomes?

Magnuson, Katherine A., Schindler, Holly S., Duncan, Greg J., Yoshikawa, Hirokazu, Bowne, Jocelyn Bonnes

2017

Overview

This study uses data from a comprehensive database of U.S. early childhood education program evaluations published between 1960 and 2007 to evaluate the relationship between class size, child-teacher ratio, and program effect sizes for cognitive, achievement, and socioemotional outcomes. Both class size and child–teacher ratio showed nonlinear relationships with cognitive and achievement effect sizes. For child–teacher ratios 7.5:1 and lower, the reduction of this ratio by one child per teacher predicted an effect size of 0.22 standard deviations greater. For class sizes 15 and smaller, one child fewer predicted an effect size of 0.10 standard deviations larger. No discernible relationship was found for larger class sizes and child–teacher ratios. Results were less clear for socioemotional outcomes due to a small sample.

• Publisher: SAGE Publishing,SAGE Publications,American Educational Research Association
• Subject: Academic achievement / Achievement / Childhood / Children / Class Size / Cognition / Control Groups / Early Childhood Education / Educational programs / Effect Size / Emotions / Experimental Groups / Hierarchical Linear Modeling / Meta Analysis / Predictor Variables / Preschool Children / Program Evaluation / Ratios / Standard deviation / Systematic review / Teacher Effectiveness / Teacher Student Ratio / Teacher Student Relationship / Teachers / Thresholds / Young Children