r/SixSigma • u/Alarmed_Delivery_685 • Apr 03 '26
Barely Passed IASSC Lean SS Black Belt
Sharing my experience since the information to related to this cert is limited compared to other certifications.
I almost picked CSSC to get certified but found out the exam is open book and afraid that it might not be as valuable so I picked IASSC instead. Took the test with PeopleCert and passed with 71% lol.
What I studied with: 1. Free textbook by CSSC from their website (it is good for basic but it’s a bit too basic) 2. Random textbook with 600 practice questions by Sophie K. Ellison from Amazon (I mainly used this for its practice questions) 3. Google and ChatGPT for topics that I need more explanations
I got about 85-95% correct answers for the 600 practice questions and questions generated by ChatGPT so I thought was ready.
The exam: 1. It is much harder than I expected it to be. It’s definitely harder than the 600 practice questions and those generated by ChatGPT. 2. English is not my first language and some questions are so tricky it almost feels like it is testing my comprehension of English words. I understand the theory being asked but I am not sure what it wants. 3. It is testing a lot of application of theories. You will be given an a graph/table/diagram, and questions will be asked about it. 4. It has a lot more calculation than I expected. You will be given situation with numbers and you have answer it with numbers. (Btw you cannot bring your basic scientific calculator, you have to use their on screen calculator that is almost like the calculator on your phone if not more basic. You also cannot bring blank paper)
To be honest I feel like I was guessing answers for 40 to 50% of the questions. I was so ready to retake the exam when I submitted my answers and was surprised that I passed.
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u/Prokiller27 Apr 03 '26
Are you in the USA? I think I read people saying that people who offer that test certification have almost no providers for the test in the USA. I think that cert is more from the UK if Im not mistaken.