Passing the PSM I: twelve mistakes allowed, and where they hide

Twelve. That is the number of mistakes the PSM I allows you, and it does not move. The threshold is 85% over 80 questions, which leaves twelve wrong answers at most. You have 60 minutes, so 45 seconds per question. The Scrum Guide runs to fewer than twenty pages, and that is precisely what misleads: the material is short, the margin is not. What remains is knowing where those twelve mistakes end up. Wrong answers are not written at random, and the pattern is not what you would expect. ## The format, as published The figures come from the official PSM I page, checked in September 2026. - 80 questions in 60 minutes. - Passing threshold: 85%, so 68 correct answers. - $200 per attempt. - Three formats mixed: single choice, multiple choice, true or false. Scrum.org offers it in English, Japanese and Simplified Chinese. Check these figures again before booking. They are exactly the data that shift, and a guide that does not say so is doing you a disservice. The PSPO I carries the same format and the same price. If your choice is not settled yet, PSM or PSPO compares what the two exams actually test. ## What the exam officially covers Scrum.org publishes the areas each certification tests, drawn from its Professional Scrum Competencies. For the PSM I they fall into three sets. Understanding and applying the Scrum framework. Empiricism, the Scrum values, the Scrum Team, the events, the artifacts, the notion of Done. This is the foundation, and by far the densest part. Developing people and teams. Self-management, facilitation, coaching. These three areas belong to the Scrum Master and are absent from the Product Owner syllabus. Managing products with agility. Forecasting and release planning, product value, Product Backlog management, stakeholders. That list says what comes up. It does not say where candidates go wrong, which is another matter. One marker, from our own bank. Of our 2,504 questions, 133 sit on the line between Product Owner and Scrum Master, and they run across eight certifications. If you could only work one subject, it would be who decides what between the two. ## The seven traps that wrong answers repeat Reading back through the explanations, the distractors fall into seven families. Recognising them is worth more than revising one more page. The project management reflex. The wrong answer reintroduces a project manager, steering by cost and deadline, or hierarchical control of the work. Always wrong. It is the most frequent trap, and it targets your field experience more than your gaps. That distractor has a history. The Agile Manifesto was written in 2001 against precisely that way of steering. It is not on the PSM I syllabus, and the Scrum Guide does not cite it. But it explains why these wrong answers keep coming back. The moved boundary. An action belonging to one accountability is handed to another. Ordering the Product Backlog belongs to the Product Owner; seeing it entrusted to the Scrum Master or the team should alert you at once. Absolutism. An option containing "always", "never" or "mandatory" is rarely the right one. The framework leaves a lot open, and the correct answer often states a condition. The version trap. A rule from the 2017 edition, removed in 2020, presented as true. It targets candidates trained on older material, and free online courses are full of them. The invented term. In multiple-choice questions, one or two event or artifact names that sound right without existing in the Guide. The test is on exact vocabulary, not on approximate recognition. The composite answer. When several options are partly true, the right answer is sometimes the one gathering them. Do not rule it out on principle. The exception in a series. Several questions cover neighbouring rules, and one of them is an exception. The test targets over-generalising: you retained the pattern, not the nuance. ## The method, in four steps ### 1. Read the Scrum Guide, in full, twice Do not skim it. Read it in full, then read it again a week later. Most questions test not your memory but your grasp of the nuances. A useful marker while reading: note every "must", every "is accountable for" and every "may". Those three verbs carry half the traps. The first requires, the second names someone accountable without giving them authority, the third permits without obliging. Pay particular attention to the three commitments and what they bind. They are recent in the Guide and often poorly learned. ### 2. Learn the Guide's vocabulary, not the everyday meaning The Guide uses words that look ordinary and are not. Accountable is not responsible, self-managing replaced self-organising in 2020, and a timebox is a maximum rather than a target. The exam tests those exact words. Everyday intuition about them misleads far more candidates than a gap in what they have read. ### 3. Sit timed mock exams Answering ten questions calmly at home has nothing to do with 80 questions against a clock. The real test is reproducing the exact format: 80 questions, 60 minutes, no feedback before the end. Aim for three consecutive mock exams above 85% before booking. One good score on its own can be luck. Three in a row cannot. ### 4. Work on your mistakes, not your strengths The classic error is redoing the topics you have mastered, because it feels good. That is wasted time. Find your two weakest topics and stay on them until they come up. - Reread the relevant section of the Guide. - Redo questions from that topic only. - Check that your rate there is climbing before moving on. ## How long to allow For someone already practising Scrum: two to three weeks, at thirty minutes a day. Without field experience, expect six weeks, giving more room to reading the Guide. Experience helps less than you would think. It can even get in the way, since the most frequent trap is answering according to what your company does. We have listed ten more in the most common traps in Scrum exams. ## Frequently asked questions ### How many correct answers does the PSM I need? 68 out of 80, since the threshold is set at 85%. That leaves twelve mistakes at most, and the count tolerates no rounding. ### Can the PSM I be taken in a language other than English? Yes, in Japanese and Simplified Chinese. Scrum.org also documents a procedure for using a machine translation module, without guaranteeing its quality. It is a fallback, not a comfort option. ### Is training required before the exam? No training is required. Scrum.org recommends it without making it a prerequisite, and the exam can be bought directly. Many candidates prepare alone from the Guide and mock exams. ### What happens if you fail? You buy another attempt at the same price. One exception exists: official Scrum.org courses include a free attempt at the associated certification. That is also the reason to reach 85% several times in practice before booking, rather than paying twice to discover the format. ### Does the PSM I expire? No. Scrum.org states that its certifications do not expire and require no renewal, and carry no later fees. The organisation makes a selling point of it against competing certifications that do renew. ## Key points - The 85% threshold over 80 questions leaves twelve mistakes, not one more. - The framework itself dominates the official syllabus, ahead of stance skills and product management. - Wrong answers fall into seven families, and the project management reflex is the most frequent. - The words "always", "never" and "mandatory" nearly always signal a wrong option. - Rules removed in 2020 still serve as traps for candidates trained on older material. - Practise on the exact wording from the start: at 45 seconds a question, the day leaves no time to decode a phrasing. - Three consecutive mock exams above 85% before booking. The format is better prepared under real conditions than on a page. The free PSM I trial uses the official format with the answer explained straight away, and no account to create.