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Lean Six Sigma Black Belt Study Guide (2026)

This is the free study guide for the Lean Six Sigma Black Belt exam — the same content areas the exam tests, written to the official outline. Read any chapter online free below, then drill the material with 20+ free practice questions and a full timed mock exam.

Last updated: August 2026.

Open the full study guideEvery chapter, in one place — free to read online.

The 5 chapters

  1. 1Define & Team Leadership20% of the exam
  2. 2Measure20% of the exam
  3. 3Analyze22% of the exam
  4. 4Improve & DOE20% of the exam
  5. 5Control & SPC18% of the exam

Practice what you read

Reading is step one; recalling it under exam pressure is what passes. Drill free Lean Six Sigma Black Belt practice questions, then sit a full timed mock exam.

Free practice questions →Timed mock exam →Cram sheet →

Educational summary, not a substitute for the official material — always confirm current details with ASQ Six Sigma Black Belt (CSSBB). Last updated: August 2026.

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