Improvement Kata

Purpose

The Improvement Kata, from Toyota Kata, teaches teams a repeatable pattern of scientific thinking: understand the direction, grasp the current condition, define the next target condition, and experiment toward it. It builds improvement as a daily practice, not a periodic event.

At a glance

How to run

1. Understand the direction (5 min) — What is the challenge or vision the team is working toward?
2. Grasp the current condition (10 min) — What is actually happening now? Use data and direct observation.
3. Establish the next target condition (10 min) — What specific, measurable condition do you want to achieve by a near-term date? This is not the final goal — it is the next step.
4. Experiment toward the target (15 min) — What obstacle is preventing you from reaching the target condition? What is your next experiment to address it? What do you expect to happen? When can we check?
5. Reflect (5 min) — What did you learn from the last experiment? Update your understanding of the current condition.

Materials needed

• Improvement Kata storyboard (visual template with the four steps)
• Current-condition data (metrics, process observations)
• Experiment record (hypothesis, expected result, actual result)

Pitfalls & common mistakes

• Target condition too far away — Keep it achievable within 1–4 weeks.
• Skipping current-condition analysis — Without understanding reality, experiments are guesses.
• No coaching — The Kata works best with a coach who asks questions, not a manager who gives answers.
• Treating it as a project plan — The Kata is a thinking pattern, not a task list.

Inclusion & accessibility

• Use a visual storyboard that all team members can see and update.
• Allow written reflections for people who process better in writing.
• Coach across time zones with async check-ins if needed.

Variations

• Coaching Kata — The five coaching questions used by the coach to guide the learner.
• Starter Kata — Simplified version for teams new to the practice.
• Strategic Kata — Apply the pattern at the organisational level for strategic challenges.

When NOT to use this

• If the team needs a quick fix for a known problem — just implement it.
• If there is no coaching support available — the practice degrades without it.

Source & further reading

• Rother, M. (2009). *Toyota Kata*. McGraw-Hill.
• Rother, M. (2017). *The Toyota Kata Practice Guide*. McGraw-Hill.