Class Size and Student Mathematics Achievement: An Empirical Study Based on PISA 2022’s East Asian Data

Abstract

Class size reduction is a popular move to improve student academic achievement in many countries and territories. Based on the PISA 2022 data, this study compares the distribution characteristics of class sizes between East Asian countries/territories and OECD countries using chi-square tests, examines the relationship between class size and student mathematics achievement in East Asia through OLS regression models, and analyzes the heterogeneous effects of class size among students with varying levels of math performance using quantile regression models.