PSM I Passing Score: How Many Questions You Can Afford to Miss

Understanding the PSM I Passing Score

The Professional Scrum Master I (PSM I) exam from Scrum.org is a rigorous assessment of your Scrum knowledge. Many candidates wonder: What is the passing score? The answer is a scaled score of 85%. This means you need to answer correctly at least 85% of the questions to pass. But what does that translate to in terms of raw questions? Let's break it down.

Exam Format and Scoring

The PSM I exam consists of 80 questions and you have 60 minutes to complete it. The questions are a mix of multiple-choice, multiple-answer, and true/false formats. The exam is scored on a scale from 0 to 100, with 85 being the passing threshold. This is a scaled score, not a simple percentage of correct answers. However, in practice, the scaled score is directly proportional to the percentage of correct answers. So, an 85% scaled score means you need to get at least 85% of the questions correct. Before moving on, consider reading PMP Passing Score: What AT/T Score Actually Means for Your Exam.

How Many Questions Can You Miss?

If you need 85% correct, that means you can miss up to 15% of the questions. With 80 questions, 15% is 12 questions. So, you can afford to miss 12 questions and still pass, provided you answer all others correctly. Let's do the math:

• Total questions: 80
• Passing percentage: 85%
• Required correct answers: 0.85 × 80 = 68
• Maximum wrong answers: 80 - 68 = 12

So, you have a buffer of 12 questions. That might sound generous, but remember that the exam is challenging and tests nuanced understanding of Scrum. Missing 12 questions means you need to be very confident on the remaining 68.

Scaled Scoring vs. Raw Percentage

You might wonder why Scrum.org uses a scaled score instead of simply reporting a percentage. Scaled scoring is common in professional certifications to ensure fairness across different exam forms. In the case of PSM I, the scaling is straightforward: your raw score (number correct) is converted to a score out of 100. Since the exam has 80 questions, each question is worth 1.25 points (100/80). So, if you answer 68 correctly, your scaled score is 68 × 1.25 = 85. This aligns perfectly with the 85% threshold. See also PMI-ACP Passing Score: What the Agile Practitioner Scaled Score Means for a complementary perspective.

Worked Example

Let's illustrate with a simple example. Suppose you take the PSM I exam and you answer 70 questions correctly. That means you missed 10 questions. Your raw score is 70 out of 80. Converted to a scaled score: 70 × 1.25 = 87.5. Since 87.5 is greater than 85, you pass. In fact, you could have missed 2 more questions and still passed (68 correct).

On the other hand, if you answer 67 correctly (miss 13), your scaled score is 67 × 1.25 = 83.75, which is below 85, so you fail. This shows that every question counts, and the difference between passing and failing can be just one question.

Strategic Implications

Knowing that you can miss up to 12 questions gives you a strategic advantage. Here are some tips: For more on this topic, see our guide on What Is a Passing Score on PMP? The Number Nobody Publishes Clearly.

• Don't panic on difficult questions: If you encounter a question you're unsure about, mark it and move on. You have a buffer, so you don't need to get every question right.
• Manage your time: With 60 minutes for 80 questions, you have an average of 45 seconds per question. Keep an eye on the clock, but don't rush. If you're spending too long on a question, make an educated guess and move on.
• Eliminate wrong answers: In multiple-choice questions, eliminate obviously incorrect options to improve your odds.
• Focus on your weak areas: Use practice exams to identify topics where you're losing points. Aim to improve your score on those areas to increase your overall buffer.
• Read questions carefully: Many questions are tricky and test your understanding of Scrum roles, events, and artifacts. Pay attention to keywords like "must", "should", "best", "first", etc.

What Does This Mean for Your Preparation?

Your goal should be to consistently score above 85% on practice exams. But don't just aim for the minimum; aim for a higher score to give yourself a safety net. If you're scoring 90% or higher on practice tests, you're in a good position. However, the real exam can be different, so it's wise to prepare thoroughly.

A free Professional Scrum Master I study plan can help you structure that preparation around your available time.

Common Misconceptions

There are several misconceptions about the PSM I passing score:

• "I need to get 85% of the questions right" – This is true, but it's not the same as getting 85% on a typical test where you might be graded on a curve. Here, it's a fixed threshold.
• "The exam is curved" – No, the passing score is absolute. It doesn't depend on how other candidates perform.
• "I can miss more questions if they are hard" – All questions carry equal weight. There are no 'bonus' points or differential scoring.

Final Thoughts

Understanding the PSM I passing score is crucial for your preparation strategy. You need 68 correct answers out of 80, which means you can miss 12. Use this knowledge to approach the exam with confidence, but don't rely on the buffer—prepare thoroughly to score well above the threshold.

Use Professional Scrum Master I (PSM I) practice questions to bridge the gap between knowing the material and answering under time pressure.

You can also take a free Professional Scrum Master I readiness check to see which topic area still needs your attention before test day.