THe Impact of Class Size on TEst Scores

 Abstract

This study investigates the impact of class size on student outcomes, particularly focusing on test scores and long-term socioeconomic indicators. Previous research has generated mixed findings, with some studies suggesting a positive correlation between smaller class sizes and higher test scores, while others challenge this relationship. 

The Tennessee Student/Teacher Achievement Ratio (STAR) experiment addresses these challenges by studying lower-income schools and randomly assigning students to different sized classrooms from kindergarten through third grade. Results from the STAR experiment show significant differences in various outcomes, including mean individual earnings, college attendance rates, homeownership, and mortality rates, among others, based on class size. Regression analysis further explores the relationship between class size and test scores, revealing that smaller classes lead to higher average test scores in both math and verbal subjects. 

Additionally, the study examines changes in student demographics, such as disadvantaged, religious, and female students, in relation to class size. The analysis suggests that reducing class size can have a positive impact on student outcomes, especially in disadvantaged communities. However, further research is needed to understand the nuanced effects of class size reduction and to develop tailored recommendations for optimizing classroom environments to maximize long-term student success. 

 The Impact of Class Size on Test Scores