Education Endowment Foundation:Lesson Study

Lesson Study

Edge Hill University
Implementation costThe cost estimates in the Toolkits are based on the average cost of delivering the intervention.
Evidence strengthThis rating provides an overall estimate of the robustness of the evidence, to help support professional decision-making in schools.
Impact (months)The impact measure shows the number of additional months of progress made, on average, by children and young people who received the intervention, compared to similar children and young people who did not.
Project info

Independent Evaluator

London School of Economics logo
London School of Economics
A collaborative professional development programme that originated in Japan.
Pupils: 12700 Schools: 181 Grant: £543,425
Key Stage: 2 Duration: 2 year(s) 9 month(s) Type of Trial: Efficacy Trial
Completed November 2017

Lesson Study is a professional development programme that involves teachers working in small groups to plan lessons that address a shared learning goal for pupils. They then deliver these lessons while their peers observe, and refine the lesson plans based on feedback and review. The focus of peer observations is on the learning of particular pupils rather than the teacher. For this project, Lesson Study was used to deliver Talk for Literacy and Talk for Numeracy interventions.

Lesson Study is a CPD approach originating in Japan that has become more popular in England in recent years. It involves many elements that are believed to be important for effective CPD, such as peer support and teacher observation, but its impact on pupil outcomes has not been robustly tested at this scale before, which is why we funded this project.

Classroom teachers in Year 4 and Year 5 took part in Lesson Study. We looked at attainment outcomes when their pupils reached the end of Year 6, and found no evidence of impact in this well-run, high-security trial.

This result does not show that all activities related to Lesson Study are ineffective. Some of the comparison schools in the trial were using lesson observations, for example. So what the results indicate is that this structured version of Lesson Study had no benefits over and above the status quo in the comparison schools.

  1. The project found no evidence that this version of Lesson Study improves maths and reading attainment at KS2.
  2. There is evidence that some control schools implemented similar approaches to Lesson Study, such as teacher observation. This trial might, therefore, underestimate the impact of Lesson Study when introduced in schools with no similar activity. If that is the case, the results suggest that this version of Lesson Study had no impact over and above elements of the Lesson Study approach that were already widely used.
  3. Teachers felt Lesson Study was useful professional development, valued the opportunity to collaborate with colleagues in a structured way, and reported several changes to their practice as a result of the programme.
  4. Schools generally implemented the programme as the developers intended. Attendance at training was high and most schools implemented one Lesson Study cycle each term.
ImpactThe size of the difference between pupils in this trial and other pupils
SecurityHow confident are we in this result?
1 year of lesson study
Months' progress
2 years of lesson study
Months' progress