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Six Sigma is more than a methodology\u2014it\u2019s a career accelerator. By earning a Six Sigma Green Belt<\/b><\/span> or Black Belt certification<\/b><\/span>, professionals demonstrate the ability to solve problems, improve processes, and lead organizational change. But with several different certifying bodies, which exam should you choose?<\/p>\n This article breaks down the most popular Six Sigma exam providers\u2014ASQ, IASSC, and CSSC<\/b><\/span>\u2014highlighting costs, exam formats, and scoring requirements. We\u2019ll also weigh the pros and cons<\/b><\/span> of each option to help you make an informed choice.<\/p>\n Organization<\/b><\/p>\n<\/th>\n Exam name<\/b><\/p>\n<\/th>\n Fee (USD)<\/b><\/p>\n<\/th>\n Questions \/ Time<\/b><\/p>\n<\/th>\n Open\/Closed book<\/b><\/p>\n<\/th>\n Delivery<\/b><\/p>\n<\/th>\n Passing score<\/b><\/p>\n<\/th>\n Retake policy<\/b><\/p>\n<\/th>\n<\/tr>\n<\/thead>\n\n ASQ<\/b><\/p>\n<\/td>\n Certified Six Sigma Green Belt (CSSGB)<\/b><\/span><\/p>\n<\/td>\n $469 (non-member); $369 (member)<\/p>\n<\/td>\n 110 Q (100 scored, 10 unscored) \/ 4h18m<\/p>\n<\/td>\n Open book<\/p>\n<\/td>\n Computer-based via Prometric<\/p>\n<\/td>\n 550\/750 (\u224873%)<\/p>\n<\/td>\n Retake $269<\/p>\n<\/td>\n<\/tr>\n Certified Six Sigma Black Belt (CSSBB)<\/b><\/span><\/p>\n<\/td>\n $568 (non-member); $468 (member)<\/p>\n<\/td>\n 165 Q (150 scored, 15 unscored) \/ 4h30m<\/p>\n<\/td>\n Open book<\/p>\n<\/td>\n Computer-based via Prometric<\/p>\n<\/td>\n 550\/750<\/p>\n<\/td>\n Retake $368<\/p>\n<\/td>\n<\/tr>\n IASSC<\/b><\/p>\n<\/td>\n Lean Six Sigma <\/span>Green Belt (ICGB)<\/b><\/p>\n<\/td>\n $350<\/p>\n<\/td>\n 100 Q \/ 3h<\/p>\n<\/td>\n Closed book<\/p>\n<\/td>\n Proctored online (PeopleCert)<\/p>\n<\/td>\n 70%<\/p>\n<\/td>\n New voucher purchase<\/p>\n<\/td>\n<\/tr>\n Lean Six Sigma <\/span>Black Belt (ICBB)<\/b><\/p>\n<\/td>\n $400<\/p>\n<\/td>\n 150 Q \/ 4h<\/p>\n<\/td>\n Closed book<\/p>\n<\/td>\n Proctored online (PeopleCert)<\/p>\n<\/td>\n 70%<\/p>\n<\/td>\n New voucher purchase<\/p>\n<\/td>\n<\/tr>\n CSSC<\/b><\/p>\n<\/td>\n Six Sigma <\/span>Green Belt (Standard Exam)<\/b><\/p>\n<\/td>\n $159<\/p>\n<\/td>\n 100 Q \/ 2h<\/p>\n<\/td>\n Open book<\/p>\n<\/td>\n Online or test center<\/p>\n<\/td>\n 70% (280\/400)<\/p>\n<\/td>\n Up to 3 attempts included<\/p>\n<\/td>\n<\/tr>\n Six Sigma <\/span>Green Belt (Self-Paced)<\/b><\/p>\n<\/td>\n $349<\/p>\n<\/td>\n 24 untimed chapter exams (10\u201315 Q each)<\/p>\n<\/td>\n Open book<\/p>\n<\/td>\n Online<\/p>\n<\/td>\n 70% each module<\/p>\n<\/td>\n Unlimited attempts in 1 year<\/p>\n<\/td>\n<\/tr>\n Six Sigma <\/span>Black Belt (Standard Exam)<\/b><\/p>\n<\/td>\n $229<\/p>\n<\/td>\n 150 Q \/ 3h<\/p>\n<\/td>\n Open book<\/p>\n<\/td>\n Online or test center<\/p>\n<\/td>\n 70%<\/p>\n<\/td>\n Up to 3 attempts included<\/p>\n<\/td>\n<\/tr>\n Six Sigma <\/span>Black Belt (Self-Paced)<\/b><\/p>\n<\/td>\n $449<\/p>\n<\/td>\n Progressive modules<\/p>\n<\/td>\n Open book<\/p>\n<\/td>\n Online<\/p>\n<\/td>\n 70%<\/p>\n<\/td>\n Unlimited attempts in 1 year<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Overview:<\/b><\/b><\/p>\n ASQ is the oldest and most recognized certifying body in Six Sigma. Their exams are comprehensive, rigorous, and valued highly by employers in industries like manufacturing, healthcare, and supply chain.<\/p>\n Green Belt:<\/b><\/span> Candidates sit for 110 multiple-choice questions in just over 4 hours. It\u2019s an open-book exam, but candidates must provide documentation of at least two to three years of relevant work experience.<\/p>\n Black Belt:<\/b><\/span> More extensive at 165 questions across 4.5 hours. ASQ requires candidates to have led or participated in projects, with supporting affidavits.<\/p>\n Pros:<\/b><\/b><\/p>\n Highest level of employer recognition.<\/p>\n<\/li>\n Open-book format mirrors workplace practice.<\/p>\n<\/li>\n Professional networking benefits through ASQ membership.<\/p>\n<\/li>\n<\/ul>\n Cons:<\/b><\/b><\/p>\n Higher cost compared to other options.<\/p>\n<\/li>\n Retake fees add up.<\/p>\n<\/li>\n Requires prior work experience.<\/p>\n<\/li>\n<\/ul>\n If you\u2019re aiming for top-tier credibility, ASQ is the gold standard<\/b><\/span>.<\/p>\n Overview:<\/b><\/b><\/p>\n IASSC\u2019s exams are standardized and strictly closed-book, making them knowledge-intensive. They\u2019re delivered online through PeopleCert, with global recognition across many industries.<\/p>\n Green Belt:<\/b><\/span> 100 questions in 3 hours with a 70% minimum passing score. No prerequisites or project work required.<\/p>\n Black Belt:<\/b><\/span> 150 questions in 4 hours. Also closed book, with the same 70% passing threshold.<\/p>\n Pros:<\/b><\/b><\/p>\n Lower cost than ASQ.<\/p>\n<\/li>\n Globally recognized, especially in Europe and Asia.<\/p>\n<\/li>\n Accessible with no prerequisites.<\/p>\n<\/li>\n<\/ul>\n Cons:<\/b><\/b><\/p>\n Closed-book format is more challenging.<\/p>\n<\/li>\n Less emphasis on project application.<\/p>\n<\/li>\n Full fee required for retakes.<\/p>\n<\/li>\n<\/ul>\n For professionals seeking a purely exam-based credential without project requirements, IASSC is a strong option<\/b><\/span>.<\/p>\n Overview:<\/b><\/b><\/p>\n CSSC emphasizes affordability and flexibility. It offers both standard exams and self-paced modular pathways, making it appealing to self-funded professionals and organizations with budget-conscious training programs.<\/p>\n Green Belt:<\/b><\/span> The $159 Standard Exam includes 100 questions in 2 hours, with up to three attempts included. The $349 Self-Paced program allows candidates to progress through smaller, untimed module exams.<\/p>\n Black Belt:<\/b><\/span> At $229, the Standard Exam is the most affordable Black Belt option. The $449 Self-Paced version is designed for flexible, incremental mastery.<\/p>\n Pros:<\/b><\/b><\/p>\n Most affordable Six Sigma exams.<\/p>\n<\/li>\n Open-book and online.<\/p>\n<\/li>\n Multiple attempts included, no expiration.<\/p>\n<\/li>\n No prerequisites required.<\/p>\n<\/li>\n<\/ul>\n Cons:<\/b><\/b><\/p>\n Not as widely recognized as ASQ.<\/p>\n<\/li>\n Some employers see it as less rigorous.<\/p>\n<\/li>\n Online, open-book format may be perceived as less challenging.<\/p>\n<\/li>\n<\/ul>\n For professionals who want flexibility and low cost<\/b><\/span>, CSSC is the best fit.<\/p>\n Choose ASQ<\/b><\/span> if your career is in industries where recognition and credibility are critical. It\u2019s the most demanding, but also the most respected.<\/p>\n<\/li>\n Choose IASSC<\/b><\/span> if you want a globally recognized, standardized exam without prerequisites. Ideal for consultants or those in international roles.<\/p>\n<\/li>\n Choose CSSC<\/b><\/span> if you\u2019re looking for an affordable, flexible option that you can pursue at your own pace.<\/p>\n<\/li>\n<\/ul>\n When you\u2019re ready to pursue your Six Sigma certification, explore your training and exam prep options at Certification Academy.<\/p>\n Learn more about the Six Sigma Green Belt Certification<\/a>.<\/p>\n<\/li>\n
\nComparison Table: Six Sigma Exam Options (Green & Black Belt)<\/b><\/h2>\n
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\nASQ (American Society for Quality)<\/b><\/h2>\n
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\nIASSC (International Association for Six Sigma Certification)<\/b><\/h2>\n
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\nCSSC (Council for Six Sigma Certification)<\/b><\/h2>\n
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\nWhich Certification Should You Choose?<\/b><\/h2>\n
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\nNext Steps<\/b><\/h2>\n
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