IASSC Lean Six Sigma

Lean Six Sigma

Three tiers, Yellow Belt, Green Belt, and Black Belt, each built to the International Association for Six Sigma Certification's own published Body of Knowledge for that belt, with a practice exam matching the real exam's length, time limit, and 70 percent pass mark.

Why IASSC

A vendor-neutral, exam-based standard

IASSC certification is purely exam-based: no project affidavits, no membership, no years-of-experience requirement to sit the test. That makes it a clean fit for a self-paced course built around real practice exams. All three belts share the same DMAIC backbone, Define, Measure, Analyze, Improve, Control, with each tier going deeper: Yellow Belt covers Define, Measure, and basic Control; Green Belt adds the full Analyze and Improve phases along with hypothesis testing and regression; Black Belt adds Designed Experiments and expanded statistical process control on top of everything in Green Belt.

Status

All three belts are live

Yellow Belt (10 lessons), Green Belt (10 lessons) and Black Belt (7 lessons) are written and published, each built against IASSC's own published Body of Knowledge for that belt. Every lesson has a diagram, a glossary, 14 practice questions (20 in each review lesson), and neural narration. Each belt ends with a practice exam matching the real IASSC exam's question count, time limit and 70 percent pass mark: 60 questions in 2 hours for Yellow, 100 in 3 hours for Green, and 150 in 4 hours for Black, drawn fresh from a larger pool every sitting.

Yellow Belt

IASSC Body of Knowledge sections 1.1 through 2.4 plus the Lean controls and control plan from 5.1 and 5.3.

Green Belt

Builds on everything in Yellow Belt and adds the full Analyze and Improve phases: patterns of variation, inferential statistics, hypothesis testing for normal, non-normal and attribute data, correlation and regression, and the full set of SPC charts (Body of Knowledge 3.1 through 5.2).

Black Belt

Builds on Green Belt and adds Designed Experiments (full and fractional factorials, resolution, center points) and expanded statistical process control (chart anatomy, rational subgroups, limit calculations, CuSum and EWMA, control and response plans), Body of Knowledge 4.3 through 5.3.