Frequently Asked Questions

Each certification includes two exam attempts. A passing score is 80%.

If you do not pass on the second attempt, you may purchase an exam reset, which provides two additional attempts.

No. There are no prerequisites for Yellow Belt, Green Belt, or Black Belt certification.

Master Black Belt certification does require prior Black Belt certification.

No. Lean Sigma Corporation certifications are competency-based, not credential-gated.

Learners from all educational backgrounds and industries are welcome.

Yes. Stand-alone certification exams are available for learners who already possess the required knowledge and experience.

Training and certification may be purchased separately or together.

• Yellow Belt – For individuals seeking a foundational understanding of Lean Six Sigma concepts and terminology
• Green Belt – For practitioners applying Lean Six Sigma methods to improve processes and results
• Black Belt – For professionals leading complex improvement initiatives and training and mentoring others

You may start at any level based on your experience and goals.

No. Statistical software is not required to complete the training or pass the certification exams.

Courses reference commonly used tools (such as Minitab, SigmaXL, or JMP) for instructional purposes, and free trials are available if learners choose to follow along.

No. Certification exams are designed to assess conceptual understanding and application concepts, not software proficiency.

You may retake the exam using your second included attempt.

If both attempts are unsuccessful, you may repurchase your course or exam for your successful attempt.

Learners receive ongoing access to their purchased courses, exams, and downloadable resources through their learner account.

All access is managed through a centralized learner account, which includes:

• Course and exam access
• Downloadable tools and resources
• Certification records and verification

Yes. All earned certifications are recorded in the Lean Sigma Corporation Certification Directory, allowing employers and organizations to verify credentials.

Yes. Lean Sigma Corporation certifications are used by:

• Individuals
• Corporations
• Universities and colleges
• Training organizations

The delivery format does not affect the validity of the certification.

Lean Sigma Corporation certifications are issued under a defined body of knowledge, standardized examinations, and a controlled certification process designed to ensure consistency, rigor, and verifiability.

Lean Sigma Corporation is a Council for Six Sigma Certification (CSSC) accredited provider, which affirms our alignment with widely recognized Six Sigma competency frameworks for organizations that require third-party accreditation reference points.

Lean Sigma Corporation independently maintains and governs its own:

• Certification standards and requirements
• Examination design and scoring criteria
• Certification issuance and verification process
• Public certification directory and credential validation

In practice, this means:
CSSC accreditation satisfies institutional and procurement requirements, while Lean Sigma Corporation provides the operational authority, control, and accountability that underpin the certification.

Certifications are earned through demonstrated competency and are issued, recorded, and verified directly by Lean Sigma Corporation.