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IASSC · Retake and recertification

IASSC Lean Six Sigma: exam retake and recertification

IASSC Lean Six Sigma exams are delivered by PeopleCert, so the PeopleCert retake rules apply: Take2, bought before the exam, gives one resit within six months; without it you buy a new exam voucher. An IASSC certification is recognised perpetually, with a Current status that lasts three years and is renewed with a recertification exam.

Reviewed by Claudio Restaino, accredited trainer

Retake rules

Take2Bought before you sit the exam, at the latest 15 minutes before the session; never after a fail. One extra attempt within 6 months of the first exam; tied to that exam; non-transferable and non-refundable. Free for PeopleCert Plus members.
Without Take2Buy a new exam voucher. Each voucher is single use.
WhereOnline and proctored, through PeopleCert, the Examination Institute for IASSC.

Recertification rules

ValidityRecognised perpetually, with a Current status for three years.
How to stay CurrentPass a proctored, closed-book recertification exam.
DeadlineBefore your status elapses, or within 90 days after; later, a full new certification exam is needed.
PeopleCert Lean – IASSC (Lean Practitioner, Leader, Expert)Renew within 3 calendar years of the issue date with the dedicated re-certification exam.

FAQ

Does an IASSC Green Belt expire?

No. It is recognised perpetually, but after three years without recertification it is no longer Current.

Can I buy Take2 after failing an IASSC exam?

No. Take2 must be bought before the exam.

What happens if I miss the 90-day window?

You need to sit a full new certification exam.

Sources, last checked 18 October 2026: PeopleCert, Take2; IASSC.
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