The debate over whether class size matters for teaching and learning is one of the most enduring, and aggressive, in education research. Teachers often insist that small classes benefit their work. But many experts argue that evidence from research shows class size has little impact on pupil outcomes, so does not matter, and this dominant view has…

The issue of class size is a complex and contested topic that has divided opinion for many years. Whilst many teachers believe that smaller class sizes assist in enhancing outcomes, a number of policy influencers, policy makers and researchers argue that it has little influence on success in learning and that decreasing class sizes is not…

The inclusion of pupils with special educational needs and disabilities (SEND) in mainstream schools can result in difficult decisions regarding classroom organisation and management. The premise of this article is that these are likely to be affected by the classroom context, specifically the number of pupils in the class, the size and…

In many studies of class size effects, teacher characteristics are missing, even though many argue it is not class size that is important but teacher quality. In the present study teachers' effectiveness on the learning progress was assessed while teaching a unit with predefined learning objectives. To measure adaptive teaching competency a…

It is widely recognized that we need to know more about effects of class size on classroom interactions and pupil behavior. This paper extends research by comparing effects on pupil classroom engagement and teacher-pupil interaction, and examining if effects vary by pupil attainment level and between primary and secondary schools. Systematic…

There is still little consensus on whether and how teaching is affected by small and large classes, especially in the case of students in the later primary years. This study investigated effects of class size on teaching of pupils aged 7-11 years. We used a multimethod approach, integrating qualitative information from teachers' end-of-year…

Studied connections between class size and teaching interactions using a multimethod approach and data from a longitudinal study of more than 10,000 children and their teachers over 3 years. Results show, overall, that in smaller classes, there is more individualized teacher support for learning. Interprets results in the context of teacher time…

Reviews existing evidence on the relationship between class size and achievement for children in their first years of schooling. Describes a large-scale longitudinal study of these children within English local education authorities. Presents results for achievement progress in literacy and mathematics during the reception year. (BT)

Reviews research into class size effects from a methodological viewpoint, concentrating on various strengths and weaknesses of randomized controlled trials (RCT) and observational studies. Discusses population definitions, causation, and generally sets out criteria for valid inferences from such studies. Illustrates with new findings from data in…

The authors examined class size effects on teacher-pupil interactions, pupil engagement, and pupil-pupil interaction. They extended previous research by recognizing the hierarchical nature of observation data and the possible influence of other variables. The study used a time sampling method involving 257 children (aged 10-11 years) in 16 small…

Despite evidence from the USA that children in small classes of less than 20 do better academically there is still a vociferous debate about the effects of class size differences in schools, and considerable gaps in our understanding of the effects of class size differences. This article summarises results from the most complete UK analysis to…

It is widely assumed that increasing the number of teaching assistants (TAs) in the classroom will be beneficial to children, and this is one important aim of the recently implemented Workforce Agreement. But there are still significant gaps in knowledge about many aspects of their deployment and impact. The Class Size and Pupil-Adult Ratios…

Reports that the debate over class size in schools has become more heated in recent years. Examines recent research and attempts to answer three questions regarding class size and academic achievement. Concludes that there is a link between the 2, but only in the early years and only with classes smaller than 20 students. (CFR)