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Professional Lean Six Sigma Credentialing. IASSC provides a unbiased independent third-party validation of Lean Six Sigma knowledge through our globally recognized Lean Six Sigma Black Belt, Green Belt and Yellow Belt Certification exams. Arrange for your IASSC Certification Exams now through our On-Demand Web-Based Testing System or in one of our testing centers anywhere in the world.

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Certification Programs

IASSC provides these industry leading, globally recognized, Lean & Lean Six Sigma Certifications.

IASSC Certified Black Belt™

A professional who is well versed in all advanced elements of the Lean Six Sigma Methodology. 150 question proctored IASSC exam. Details

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IASSC Certified Green Belt™

A professional who is well versed in the core to advanced elements of Lean Six Sigma Methodology. 100 question proctored IASSC exam. Details

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IASSC Certified Yellow Belt™

A professional who is well versed in the foundational elements of the Lean Six Sigma Methodology. 60 question proctored IASSC exam. Details

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IASSC Certified Lean Expert™

A professional who possess a mastery of all the Lean Management tools and their applications. 110 question proctored IASSC exam. Details

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IASSC Certified Lean Leader™

A professional who possess an advanced understanding of Lean and the skills and tools. 90 question proctored IASSC exam. Details

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IASSC Certified Lean Practitioner™

A professional who possess a basic understanding of Lean and the skills to successfully implement Lean tools. 50 question proctored IASSC exam. Details

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About our Certifications

IASSC Lean Six Sigma Professional Credentialing.

Well known and globally recognized, IASSC Certification provides a mark of professional distinction. The IASSC Lean and Lean Six Sigma Certification Exams aim to measure a person’s knowledge of the topics contained within the IASSC lean & Lean Six Sigma Body of Knowledge™. IASSC certification provides evidence of personal accomplishment in the mastery of the universally accepted IASSC Lean & Lean Six Sigma Standards.