Six Sigma Certification Exams
Independent Assessments Validating Professional Six Sigma Competency
Lean Sigma Corporation certification exams are formal assessments designed to
validate Six Sigma knowledge and competency at the Yellow Belt, Green Belt, and Black Belt levels.
Validate → Demonstrate → Advance
Choose the Certification Exam That Matches Your Level
Certification courses designed to develop practical Lean Six Sigma skills and prepare you for independent certification. Each program maps to a defined role in process improvement, from entry-level literacy to enterprise leadership, so you can choose the training that aligns with your current expertise and career goals.
What's Your Next Career Move?
Choose your course based on your next career move (what do you want to become?)
Certified Six Sigma Yellow Belt (CSSBB)
Training for managers, supervisors, and process experts (SMEs) to build Six Sigma literacy and effective project participation.
Certified Six Sigma Green Belt (CSSGB)
Training for professionals solving real problems, or those who want to learn how, using Six Sigma and DMAIC
Certified Six Sigma Black Belt (CSSBB)
Training for business leaders directing and facilitating complex process and operational improvements
Lean Sigma Corporation’s Six Sigma certification courses are structured online training programs designed to develop practical, job-ready Lean Six Sigma skills. Each course aligns to a specific certification level—Yellow Belt, Green Belt, or Black Belt—and is designed to prepare candidates for certification assessment (included) while supporting real-world application.
Certified Six Sigma Yellow Belt (CSSYB)
Literacy and a Common Language
The Yellow Belt course is designed for professionals who want to understand how Six Sigma works and how improvement efforts are structured. It builds foundational literacy so you can participate effectively, follow structured problem-solving, and contribute with confidence.
This is the right place to begin if you are new to Six Sigma or want a clear, practical introduction without unnecessary complexity.
Certified Six Sigma Green Belt (CSSGB)
Lead Focused Projects
with Data and Discipline
The Green Belt course is for professionals who are ready to take ownership of improvement work. It focuses on applying the DMAIC methodology to real problems, using data to drive decisions, and delivering measurable results.
This level is designed for those expected to lead projects—not just support them—and to turn analysis into action.
Certified Six Sigma Black Belt (CSSBB)
Lead Complex Improvements
Across the Organization
The Black Belt course is designed for leaders who direct and facilitate complex process and operational improvements. It goes beyond tools, focusing on judgment, interpretation, and leadership in high-impact situations.
This level prepares you to operate with authority, guide teams through ambiguity, and deliver sustained improvement at scale.
Certified Six Sigma Black Belt+ (CSSBB+)
Operate at the Enterprise Level
with Poven Apptitude
The Black Belt Plus program is for professionals who want more than knowledge—it’s for those who want distinction. This is an applied certification for leaders expected to deliver results at the enterprise level and demonstrate their capability through validated execution.
CSSBB+ signals that you don’t just understand Six Sigma, you’ve applied it, proven it, and can be relied on to lead transformation where it matters most.
