Lesson Study
Lesson Study (jugyou kenkyuu) is a collaborative professional development model originating in Japan, where it has been practised for over a century. A small group of teachers (typically 4–6) jointly plan a single "research lesson," one member teaches it while the others observe, and then the group analyses what happened — with the focus squarely on student learning, not teacher performance.
The model was introduced to the English-speaking world primarily through Stigler & Hiebert (1999) and Lewis (2002), and has since spread widely in general education. Its application in ELT is growing but still underrepresented relative to its potential.
The Cycle
1. Identify a research focus
The group selects a question about student learning: How can we help students develop more coherent paragraph structure? Why do students avoid using new vocabulary in speaking tasks? The question drives the entire process.
2. Collaboratively plan the research lesson
The group designs a single lesson in detail — not just activities and timing, but anticipated student responses, potential misconceptions, and what evidence of learning to look for. This planning phase is where most of the professional learning occurs.
3. Teach and observe
One teacher delivers the lesson while the others observe. Observers do not evaluate the teacher — they collect data on student learning: What did students say? What errors appeared? Who was engaged and who was not? How did students respond to key tasks?
4. Debrief and analyse
The group discusses the observation data. Questions focus on learning outcomes: Did students achieve what we intended? What evidence tells us? Where did the lesson design help or hinder learning?
5. Revise and reteach (optional)
The group revises the lesson based on findings and, ideally, another member teaches the revised version to a different group. This iterative cycle — plan → teach → observe → revise → reteach — is the engine of improvement.
6. Share findings
The group documents insights and shares them with the wider teaching community — through a report, presentation, or open research lesson.
What Makes Lesson Study Different
| Feature | Typical PD | Lesson Study |
|---|---|---|
| Focus | Teacher behaviour | Student learning |
| Observation purpose | Evaluate the teacher | Collect evidence about learning |
| Planning | Individual | Collaborative — the lesson belongs to the group |
| Knowledge source | External expert | Emerges from collaborative inquiry |
| Duration | One-off session | Extended cycle (weeks to months) |
| Outcome | Tips and techniques | Deepened understanding of teaching and learning |
The critical distinction is the focus on student learning. Observers are not asking "Was the teacher good?" but "Did the students learn what we intended, and what evidence tells us so?" This removes the evaluative pressure that makes classroom observation threatening and replaces it with collaborative inquiry.
In ELT
Applications in language teaching:
- Grammar instruction — Investigating how students process and produce a target structure
- Reading lessons — Studying how students interact with texts and whether comprehension strategies are being used
- Speaking development — Observing whether students use target language or fall back to L1 during tasks
- Assessment design — Using the research lesson to test whether assessment tasks elicit the intended language
Conditions for Success
- Administrative support — Teachers need release time for collaborative planning and observation
- Trust — The group must be genuinely collaborative, not hierarchical
- Patience — Lesson study is slow; it trades breadth for depth
- Focus discipline — The research question must be specific enough to investigate in a single lesson
- Culture of inquiry — Lesson study works best in institutions that value reflective practice and teacher-led research
Key References
- Stigler, J. W. & Hiebert, J. (1999). The Teaching Gap. Free Press.
- Lewis, C. (2002). Lesson Study: A Handbook of Teacher-Led Instructional Change. Research for Better Schools.
- Dudley, P. (2015). Lesson Study: Professional Learning for Our Time. Routledge.
See Also
- Action Research — lesson study is a form of practitioner research
- Classroom Observation — lesson study reframes observation as data collection, not evaluation
- Peer Observation — the collaborative observation at the heart of lesson study
- Reflective Practice — lesson study structures and deepens reflection