School Socioeconomic Composition as a Factor of Educational Inequality Reproduction

Abstract

It can be inferred from international findings that school socioeconomic composition (SEC) is a major factor of educational inequality in secondary education. Along with individual student characteristics, SEC is believed to have a direct impact on student achievement. However, a review of research methods used in most studies calls the existence of a direct influence into question. A study was carried out to evaluate causal relations between school SEC and student achievement. Multilevel regression analysis and propensity score matching (PSM) methods were applied to the data obtained in the panel study Trajectories in Education and Careers in order to measure the effects of one year of attending a low- vs. high-SEC school. Correlational and quasi-experimental effect sizes were compared. Analysis results confirm that school SEC is a key factor of educational inequality in Russian secondary education. The inequality effects of school composition overlapping only partially with those of school location. Within a year of schooling, ninth-graders with similar individual characteristics may lose up to a quarter of standard deviation in their PISA.2012 scores if attending a low- SEC school, while attending a high-SEC school is associated with improvements in educational outcomes by the end of the ninth grade. Negative effects were observed for two subject areas, which allows suggesting a systematic impact of SEC on student achievement. The final part of the article describes the theoretical and practical significance of the findings and presents the main directions of further research in the field.