Customer reviews

Check out what others are saying about the Lean Six Sigma - Yellow Belt course.

“I just finished taking the GoSkills Yellow Belt course and passed my IASSC exam on the first try with a 92%! This course is by the far the best organized and presented I've seen, at a better price.”

Karl Baedeker

“This is a great training program to study and use with other books on LSS yellow belt. I feel pretty confident that with a few more hours of study I can pass the IASSC yellow belt exam.”

Glenn Steinke

“I really enjoyed this course and I will highly recommended to any person. I will continue to study the attachments from each lesson until I can feel more confident to pass the IASSC Yellow Belt exam.”


“Really concise, practical and informative course; recommended either for new certifications or for refreshing.”

Jose Luis Sosa

“Ray was great!”

JR Ladson

“Very useful!!! Thanks, Ray Sheen and GoSkills group!!”

Sivaraman Hariharan

“Very interesting!!”



Amanda Daroga-Marajh

“Fantastic! I feel I have appropriately prepared for the certification through this program. Thank you!”


“Very informative and loved that is was in short 5-7 minute burst. Was able to retain the information better and could work on it even when I didn't have a lot of free time. ”