Lean Practitioner Certification


Lean Certifications Exams will begin in October 2020.

IASSC Certified Practitioner Expert™ (Introductory Level)

Lean Practitioners participate and/or lead Lean Improvement efforts within their usual field, area or operation. Lean Practitioners, also referred to as Lean Yellow Belts or Lean Bronze, possess a basic understanding of Lean and the skills to successfully implement fundamental Lean tools.

Lean Practitioners training generally includes some combination of classroom and/or online learning, self-study, coaching & mentoring consisting of approximately 16 to 36 hours (2 to 4 days in-class equivalency), not including time associated with project application and implementation.

Lean Practitioners often operate in a part-time capacity with a dedication of up to 30% of time directly related to improvement efforts. This Lean proficiency is applicable across all Lean Environments including; Lean Manufacturing, Lean Production, Lean Office, Lean IT and Lean Development. Lean Practitioners possess the skills and competencies to:

* Explain Lean principles & techniques.
* Identify waste in the workplace.
* Organize and improve work areas.
* Carry out work-based studies and identify opportunities for improvement.
* Apply relevant Lean techniques to eliminate waste.
* Carry out Lean improvement projects.
* Establish metrics to monitor progress and results.

Certification Testing

The IASSC Certified Lean Practitioner Exam™ is a 50 question, closed book, proctored exam with a 1 hour allotted time. Some forms of this exam may also include up to an additional 5 non-graded questions*. The Exam contains multiple-choice and true/false questions from each section of the IASSC Lean Practitioner Body of Knowledge. Exams begin in October with On-demand Web-based testing. Followed by future exam availability throughout our affiliate partner network as well as within our PearsonVue network of more than 8,000 Testing Centers located within 165 countries throughout the world.


In order to achieve the professional designation of IASSC Certified Lean Practitioner (IASSC-CLP™) from the International Association for Six Sigma Certification, candidates must sit for the IASSC Certified Lean Practitioner Exam and achieve a minimum score of 70%.

There are no prerequisites required in order to sit for the IASSC Certified Lean Practitioner Exam. Purchase a Lean Practitioner Exam Voucher for $95 USD through the link provided below.


For those who wish to sit for the exam it is recommended, but not required, that Lean Expert training is obtained through a qualified institution, Lean trainer or corporate program. It is also recommended, although not required, that those sitting for the exam have some degree of real-world Lean work experience. IASSC offers a non-proctored (informal) Lean Evaluation Exam that may help you determine if you are ready to sit for an official proctored Certification Exam.


Upon successful achievement, Professionals will receive IASSC Lean Practitioner Certification issued by the International Association for Six Sigma Certification™, a true independent third-party Certification Association within the Lean Six Sigma Industry.

IASSC Certification is recognized perpetually. In accordance with the IASSC Recertification Policy, effective March 1, 2017, a classification system recognizes certifications as “Current” for a period of three years and defines regulations for maintaining such Status.

An IASSC Certified Lean Practitioner is issued a Certificate (PDF) which includes a Certification Number, a digital badge, added to the Official IASSC Certification Register and granted the right to use the IASSC Certification Marks and Titles; a professional designation which may be used in resumes and public profiles such as LinkedIn, consistent with the IASSC Marks Use Policy.

Purchase On-Demand Web-Based Exam (Coming Soon)

Integrate IASSC Certifications into your Lean Programs