Six Sigma Study Guide, founded by Ted Hessing, has helped professionals prepare for Lean Six Sigma certification since 2013. To date, thousands of students have prepared with its full study programs. The site pairs study guides organized by each exam Body of Knowledge with a large bank of practice questions: 1,000+ for Green Belt and 2,000+ for Black Belt, each with a detailed explanation. Candidates can take topic quizzes and full mock exams for major Six Sigma certificant organizations, like International Lean Six Sigma Institute (ILSSI).
The website also offers a free, comprehensive library of all topics endorsed by their Body of Knowledge for Yellow, Green and Black Belt exams.
![UCOURSE.ORG [UCOURSE Academy] was established in Hong Kong in 2019 (company name: UCOURSE LTD), dedicated to providing high-quality online courses and courses for Chinese people in China, Hong Kong, and even all over the world. UCOURSE.ORG 【优思学院】于2019年成立于香港（公司名称：优思学院有限公司 / UCOURSE LTD)，致力于为中国、香港、以至身处于全球各地的中国人提供优质的线上课程和考试认证，促进全国的人材培育、个人的职业发展，让学员在事业上事半功倍，同时助力国家的未来的急促发展。](https://ilssi.org/wp-content/uploads/2021/02/ucourse-logo-250.png){kind=logo}
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