📊 Scrum.org vs Scrum Alliance

PSM II vs CSM®

Professional Scrum Master II (Scrum.org) and Certified ScrumMaster (Scrum Alliance) (Scrum Alliance) cover different bodies of knowledge. Here's how they compare side by side — and how to pick the one that fits your role.

Side-by-side comparison

The fastest way to see which credential fits your experience and goals.

  PSM IIProfessional Scrum Master II CSM®Certified ScrumMaster (Scrum Alliance)
LevelAdvancedFoundation
Exam length1h 30m1h 0m
Questions (real exam)~30~50
Pass mark85%74%
In a sentenceAdvanced scenario-based Scrum mastery — beyond PSM I.The classic Scrum Master certification.
Free practice109 sample questions149 sample questions

Exam parameters are compiled from each vendor's official exam guide. Always confirm the current format, eligibility and fees on the official Scrum.org and Scrum Alliance site before booking. ExamDeck is an independent study tool and is not affiliated with Scrum.org or Scrum Alliance.

Cost, study time and renewal

Figures as published by each vendor, transcribed on the date shown. Where a vendor prices differently for members, both prices are listed.

  PSM IIfacts as of August 2026 CSM®facts as of August 2026
Fees
Exam attempt: $250 (verify on scrum.org)
Course requirement: None — self-study allowed
Renewal: None — valid for life
CSM course (required): ~$250–1,500+ — set by trainer; incl. exam + 2 attempts
Extra retake: $25
Membership: 2 years included
Renewal (every 2 yrs): 20 SEUs + $100
Study timecommonly reported 20–40 hours for practitioners already experienced as Scrum Mastersthe 14–16-hour course itself; attentive participants typically pass right after it
RenewalNone — valid for life, no annual renewal feeEvery 2 years — 20 Scrum Education Units (SEUs) plus a $100 renewal fee
Entry requirementNo formal prerequisites.Completion of a CSM course from a Scrum Alliance Certified Scrum Trainer is required — 16 hours in person or 14 hours live-online. No self-study path exists.
Body of knowledgethe Scrum Guide (2020) and Scrum.org's Professional Scrum Competenciesthe Scrum Guide (2020) and Scrum Alliance CSM Learning Objectives
Full fact pages PSM II cost · format · eligibility CSM® cost · format · eligibility

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PSM II vs CSM® — questions, answered

What is the difference between PSM II and CSM®?

PSM II (Professional Scrum Master II) is a Scrum.org advanced credential, while CSM® (Certified ScrumMaster (Scrum Alliance)) comes from Scrum Alliance (foundation). They cover different bodies of knowledge, so the choice depends on the role you're aiming for rather than difficulty alone.

Which is harder, PSM II or CSM®?

The PSM II exam runs about 1h 30m with ~30 questions; the CSM® exam runs about 1h 0m with ~50 questions. The more senior credential generally demands more applied, scenario-based judgement.

Can I practice both PSM II and CSM® for free?

Yes. A free account gets 6 sample questions in study mode for each of PSM II and CSM®, with an explanation for every option, plus a 10-question diagnostic for each. No credit card required.

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