RT Journal Article T1 Does within-school between-class ability grouping harm the educational outcomes of socio-economically disadvantaged children? A1 Jerrim, John A1 López-Agudo, Luis Alejandro A1 Marcenaro-Gutiérrez, Óscar David K1 Pedagogía K1 Dinámica de grupos K1 Escolares - Psicología K1 Movilidad social AB Grouping students into different classes based upon their academic achievement or ability is a relatively common practice across the world, particularly in English-speaking countries. Yet some argue that teaching students in mixed-ability classes is a better approach, with important benefits for those from disadvantaged socio-economic backgrounds. Unfortunately, existing evidence comparing outcomes across these approaches is scant. This paper hence provides new international evidence on this matter, drawing upon data from the 2015 Trends in Mathematics and Science Study study. Our results point towards null effects; neither approach leads to demonstrably better outcomes for students than the other. This also holds true for young people from disadvantaged socio-economic backgrounds, suggesting that between-class ability grouping does not harm the educational prospects of these children. Some limited evidence does emerge, however, that primary school teachers believe they are better able to support struggling students—and challenge the highest achievers—when ability grouping is used. PB Oxford University Press YR 2024 FD 2024-12-17 LK https://hdl.handle.net/10630/39281 UL https://hdl.handle.net/10630/39281 LA eng NO John Jerrim, Luis Alejandro Lopez-Agudo, Oscar David Marcenaro-Gutierrez, Does within-school between-class ability grouping harm the educational outcomes of socio-economically disadvantaged children? International evidence, European Sociological Review, 2024;, jcae050, https://doi.org/10.1093/esr/jcae050 NO Fundación BBVA (Programa PRISMAS y PROBLEMAS. NO Ramón Areces DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026