Investigating the effects of class composition and class size on pupils’ attainment in Scottish primary schools

This research studies the effects of composite classes. In Scotland these classes comprise of primary school pupils from adjacent years. In the case of primary one pupils (P1 pupils) those just starting school may be taught alongside primary two pupils (P2 pupils). Pupils in primary two meanwhile, may be taught alongside pupils who are in their first year of school or their third year (P1 or P3),and so forth for other years, right up to primary seven. In this research project, they study whether exposure to younger or older peers by way of composite classes affects educational outcomes.