IASSC Certified Lean Leader (CLL)
The IASSC Certified Lean Leader (CLL) exam validates knowledge of Lean principles and methodologies including waste elimination, 5S, value stream mapping, visual management, and continuous improvement tools. It is a closed-book, proctored exam based on the IASSC Lean Leader Body of Knowledge.
99
Questions
120 min
Time Limit
70%
To Pass
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Exam Rules
- You can skip questions and return to them later
- Flag questions for review before submitting
- No feedback shown until you submit the entire exam
- Unanswered questions count as wrong — answer everything
- 10 pretest questions are mixed in and don't affect your score
- Timer auto-submits when time runs out
- Your progress is auto-saved every 30 seconds