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No, you do not have to. The White Belt Training & Certification is if you’re new to process improvement and would like learn what Lean Six Sigma is. The Yellow Belt Training & Certification is for if Lean Six Sigma is new to you and you’d like an introduction.

Tracy O'Rourke

Tracy is a Managing Partner & Executive Advisor at She is also a Lean Six Sigma Green Belt Instructor at UC San Diego and teaches in San Diego State University’s Lean Enterprise Program. For almost 20 years, she has helped leading organizations like Washington State, Charles Schwab and GE build problem-solving muscles.