For many teachers, large classes present problems which adversely affect their practice and their pupils’ learning. This is what our surveys show. But researchers and commentators often have a different view. For them the class size debate can be summed up with the question: does class size affect pupil attainment?
As we show in our new open access book, ‘Rethinking Class Size: The Complex Story of Impact on Teaching and Learning’, published by UCL Press this week, researchers (contrary to a practitioner view) commonly find that the statistical association between class size and attainment is not marked and so conclude that class size does not matter much. This has led some to even suggest that we could raise class sizes, and instead invest savings in professional development for teachers. Currently, in the wake of the Covid pandemic and teacher absences, there are reports of some schools being forced to create supersized classes of 60 pupils.
The view that class size is not important is probably the predominant view among researchers and policy makers, and so they may be relatively relaxed about increases in class size. We therefore need – more than ever – good quality evidence on class size effects, but in our view much research is limited and leads to misleading conclusions.
We identify three problems. (more…)