Certified Lean Six Sigma
Yellow Belt
(CLSSY)
Advanced Certification — Globally Accessible, Optional Training Available, Apply for Certification, Qualify, earn your credential, Digital Badges Verification, certification for experienced professionals.
Certified Lean Six Sigma Yellow Belt (CLSSY)
An exam-only pathway for professionals who understand DMAIC and Lean fundamentals. No project required.
1. Exam-Only Model
Optional Training Available. Meet the eligibility criteria and take the Independent Certification Examination directly.
2. No Project Required
CLSSY is knowledge-based. Pass the 60-question exam to earn your full credential.
3. DMAIC & Lean Focus
Covers all 5 DMAIC phases, 8 wastes, 5S, basic statistics, and root cause analysis tools.
4. Verifiable Certificate
Digital certificate with unique ID and QR code for instant online verification by employers.
CLSSY Eligibility Criteria
Meet ONE of the following pathways to qualify for the Yellow Belt exam
1. Pathway A — White Belt Holder
- Hold a valid CLSSW or White Belt from recognized body
- Basic understanding of Lean Six Sigma concepts and terminology
2. Pathway B — Working Professional
- 1+ year of professional work experience in any industry
- Exposure to process improvement or quality management
- Familiarity with basic problem-solving tools
3. Pathway C — Student / Recent Graduate
- Currently pursuing or completed a Bachelor's degree
- Interest in process improvement, quality, or operations
- No prior work experience required
CLSSY Body of Knowledge
8 Knowledge Areas | 60 Questions | 2 Hours | 70% Passing Score
1Six Sigma Fundamentals & Yellow Belt Role~12%
+- History and evolution of Six Sigma
- DMAIC methodology overview
- Roles: Champion, Black Belt, Green Belt, Yellow Belt
- Yellow Belt responsibilities in improvement projects
- Organizational benefits and basic ROI concepts
2Lean Fundamentals & Waste Elimination~15%
+- Lean principles and Toyota Production System origins
- 8 Types of Waste (TIMWOODS) — detailed identification
- Transportation, Inventory, Motion, Waiting waste
- Overproduction, Overprocessing, Defects, Skills waste
- 5S workplace organization methodology
- Value stream mapping basics
- Kaizen and continuous improvement culture
3Define Phase — Project Identification~12%
+- Project selection criteria and scoping
- Problem statement writing
- Project charter components
- Voice of Customer (VOC) collection methods
- Critical to Quality (CTQ) tree development
- SIPOC diagram creation and analysis
- Stakeholder identification
4Measure Phase — Data & Process Mapping~15%
+- Data types: continuous vs. discrete
- Data collection methods and sampling
- Operational definitions
- Process mapping: flowcharts and swimlane diagrams
- Basic statistics: mean, median, mode, range
- Variance and standard deviation
- Normal distribution introduction
- MSA concepts and baseline measurement
5Analyze Phase — Root Cause Analysis~15%
+- Root cause analysis principles
- Fishbone (Ishikawa) diagram construction
- 5 Whys technique
- Pareto analysis and 80/20 rule
- Cause and effect matrix
- Basic graphical analysis: histograms, scatter plots
- Process capability introduction: Cp and Cpk
6Improve Phase — Solution Development~12%
+- Brainstorming techniques
- Solution selection matrix
- Mistake proofing (Poka-yoke) principles
- Standard work development
- Implementation planning and pilot testing
- Risk assessment in implementation
- Change management fundamentals
7Control Phase — Sustaining Improvements~12%
+- Control plan fundamentals
- Standard Operating Procedures (SOPs)
- Basic SPC introduction
- Control charts: purpose and interpretation
- Visual management tools
- Response plans for out-of-control conditions
- Documentation and knowledge transfer
8Yellow Belt Project Essentials~7%
+- Yellow Belt project scope and expectations
- Applying DMAIC to small-scale improvements
- Project documentation and reporting
- Supporting Green/Black Belt projects
- Next steps: Path to CLSSGB certification
CLSSY Exam Specifications
Everything you need to know about the Yellow Belt certification exam
60 Questions
Multiple-choice covering all 8 knowledge areas
2 Hours
120 minutes. Online proctored with identity verification
70% to Pass
Score 42 out of 60 or higher to pass the exam
Secure Proctoring
Identity verification, question randomization, browser lockdown
FREE Retakes $0
Unlimited retakes within 6 months. Completely FREE.
Digital Certificate
Issued by Quality Progress Certification Board. Online verification.
What the CLSSY Exam Validates
The exam assesses your ability to apply Lean Six Sigma tools in real-world settings
How to Get CLSSY Certified
Simple 3-step process — no project required for Yellow Belt
Check Eligibility
Ensure you meet one of the three eligibility pathways above
Register & Pay
Submit registration form and pay the $30 exam fee
Pass the Exam
Score 70%+ on the 60-question online proctored exam and receive your certificate
Quality Progress Certification Board
Your CLSSY credential is officially issued and verified by the Quality Progress Certification Board — an independent, globally recognized certification body, like ASQ and CSSC. This represents verified knowledge, not just course completion.
CLSSY Certification Fee
Yellow Belt Exam
- 60-Question Online Proctored Exam
- Sample Question Bank (30 Practice Questions)
- CLSSY Digital Badge & Credential
- Verifiable Certificate with QR Code
- FREE Unlimited Retakes (within 6 months) $0
- Lifetime Certificate Verification Portal Access
- Issued by Quality Progress Certification Board
Secure Payment | Exam Link Within 24 Hours | FREE Retakes
Frequently Asked Questions
Quick answers about CLSSY certification
CLSSY stands for Certified Lean Six Sigma Yellow Belt. It is an exam-only certification that validates your understanding of DMAIC methodology, Lean principles, and basic process improvement tools — without requiring a project or mandatory training course.
No training is required. CLSSY is an exam-only pathway. If you already possess Yellow Belt knowledge through work experience, self-study, or prior learning, you can directly register and take the exam.
The exam fee is $30 USD. No Hidden Fees. This includes the exam, digital certificate, badge, and FREE unlimited retakes within 6 months.
You get UNLIMITED FREE retakes within 6 months of your initial registration. There is NO additional fee for retakes. This policy ensures you have every opportunity to succeed without financial pressure.
Yes. Your digital certificate includes a unique ID and QR code that links to our online verification portal. Employers can instantly confirm your credential is authentic and issued by the Quality Progress Certification Board.
You need 70% to pass — that's 42 correct answers out of 60 questions. The exam is multiple-choice and covers all 8 knowledge areas in the Body of Knowledge.
After registration and payment, you will receive your exam access link within 24 hours via email. The exam can be taken at your convenience within the 6-month validity period.
Your CLSSY credential is issued by the Quality Progress Certification Board, an independent certification body. This is not a course completion certificate — it represents verified competency through examination.
Apply for Certification
Registration Received!
Thank you for registering for CLSSY with Quality Progress.
We will contact you within 24 hours via email with payment instructions and exam access details.
Email: support@qualityprogressbd.com
WhatsApp: 1954-577058
Email: support@qualityprogressbd.com · WhatsApp: 1954-577058