SSGI has developed a well-rounded, easy to follow course to prepare learners to take the Lean Six Sigma Green Belt Certification Exam. The course presentation, flash cards and sample quizzes work together to give the learner a good understanding of the theory, principles and formulas of Lean Six Sigma. The course is well designed, and is a great investment for the price charged, considering the fact that you can take the certification exam online as many times as it takes it pass, at no extra charge. Thanks SSGI for helping me to earn my Lean Six Sigma Green Belt Certification!!