How I Passed the ISO 27001:2022 Lead Auditor Exam in Just 15 Days (Tips & Mistakes to Avoid!)

TL;DR

✅ Read, Read, Read — Go through ISO 27001, ISO 27000, and ISO 19011 multiple times. Understanding is the key! ✅ Time Management is the Biggest Challenge — No backward navigation means every answer must be final! ✅ Key Strategy — Use PDCA to map scenario based questions to clauses for faster and more accurate answers. ✅ Pro Tip — Focus on where to find information, not memorization!

When I first decided to take the ISO 27001:2022 Lead Auditor exam, I had no idea what to expect. I wondered — Is it hard? What should I study? How do I manage time during the exam?

I passed my ISO 27001:2022 Lead Auditor exam on February 4, 2025, after just 15 days of preparation. In this article, I’ll share everything — right from my study plan to exam strategies, and the mistakes I made (so you don’t repeat them!).

Let’s dive in! 👇

📅 Choosing the Right Batch: My Timeline

I took my training from BSI Academy and opted for the weekend batch training (limited to 10 participants). Here’s how my training was structured:

Weekend Batch Schedule:

→ Week 1: Saturday & Sunday

→ Week 2: Saturday & Sunday

→ Week 3: Monday (final day)

This structure gave me an extra one-week gap between training weekends — giving me additional study time before my exam.

💡 Important Tip: The CQI and IRCA exam voucher is valid for one month after the training ends, so plan accordingly!

To stay organized and maximize my preparation, I followed a structured approach:

🗓️ Week 1: First Training Weekend & Foundation Study

→ Attended the first half of the training (weekend batch) → Focused on reading and understanding ISO 27000 & ISO 27001 → Used ChatGPT to break down complex concepts → Familiarized myself with the exam format & structure

🗓️ Week 2: Second Training Weekend & Intensive Study

→ Completed the second half of the training → Studied ISO 19011 (Auditing Guidelines) → Re-read ISO 27000 & ISO 27001 → Started mock tests — one per day for three consecutive days

🗓️ Week 3: Final Revision & Confidence Boost

→ Mapped everything to the PDCA cycle for better understanding → Focused on quick navigation of standards rather than memorization → Reinforced concepts & ensured time management skills were strong

🗓️ Exam Day: Stress-Free & Straightforward

→ No prior scheduling needed — just logged in, entered the code, and started. → The proctored exam used a camera and microphone to monitor me, but no live invigilator. → Allowed materials: Digital & physical copies of standards and notes (but no screenshots or photos).

📝Understanding the Exam Format

This is NOT your typical multiple-choice exam. It’s designed to test real-world application of auditing concepts, NOT memorization.

Exam Structure & Format:

CQI and IRCA ISO 27001:2022 Lead Auditor Exam Pattern

Total Questions: 40

Question Types: → Multiple Choice (one correct answer) → Multiple Response (select multiple correct answers) → Fill in the Blanks → Matching → Sequencing

Passing Criteria:

→ Must pass each domain separately (refer to the table above)

→ Must score at least 50% overall (40 marks)

→ Non-native English speakers get +30 minutes (So, I got a total of 2 hours 15 minutes to complete the exam)

🚨 Major Challenge: You CANNOT go back to previous questions once you’ve answered!

📚 My Study Plan & Resources

Here’s exactly what I used to prepare for the exam:

1️⃣ The Standards (Must-Read!)

I read these at least five to six times to quickly navigate them during the exam:

📖 ISO 27001:2022 (Requirements Standard)

📖 ISO 19011:2018 (Auditing Guidelines)

📖 ISO 27000:2018 (Terms & Definitions)

💡 Pro Tip: Knowing where to find information is more important than memorizing it!

2️⃣ Mock Exams & Time Management

CQI and IRCA provide an official mock test — I took it three times. My goal? Not memorization (since the questions are same!) but to learn speed and accuracy under time pressure.

3️⃣ Using PDCA to Break Down Clauses

Our trainer taught us to use the Plan-Do-Check-Act (PDCA) cycle to understand how the standard is structured:

🔹 Plan: Clauses 4–6 🔹 Plan & Do: Clause 7 🔹 Do: Clause 8 🔹 Check: Clause 9 🔹 Act: Clause 10

This made scenario-based questions easier — whenever I saw a question, I could quickly map it under PDCA and then jump to the relevant clause !

4️⃣ Concepts I Focused On

I made sure to fully understand: ✅ 1st, 2nd, and 3rd party audits (and their differences) ✅ First & second-stage audit processes ✅ Steps of an audit (from ISO 19011) ✅ Mandatory documents in ISO 27001 ✅ Surveillance and Certification Audits

5️⃣ Teaching to Learn 🤓

I pretended my water bottle was a student and taught it everything I learned. Sounds silly, right? But explaining concepts out loud helped me remember them better!

⚡ Exam Day — Key Insights & Mistakes

✅ What You’re Allowed to Keep During the Exam

→ Digital & physical copies of the standards and notes.

→ No screenshots or photos allowed (considered misconduct ). If you have screenshots from the training, compile them into a Word document and then refer to this document during the actual exam.)

❌ Mistakes I Made (So You Don’t!)

❗Mistake #1: Taking the 10-Minute Break (You’re allowed one 10-minute break.)

🚨 What I Did: Took the break when I felt confident. 😨 What Happened? When I returned, I still had more scenario-based questions left and ended up running out of time during the last section!

💡 Lesson Learned: Don’t take a break unless it’s absolutely necessary!

❗Mistake #2: No Backward Navigation (Answer wisely — there’s no second chance!)

🚨 What I Did: I have a habit of re-reading questions, but this exam doesn’t allow going back. 😨 What Happened? If I realized a mistake later, I couldn’t change my answer!

💡 Lesson Learned: Read carefully before submitting an answer!

❗ Mistake #3: Assuming Everyone Gets the Same Exam (Your friend’s test won’t be the same as yours!)

🚨 What I Did: Focused on topics I thought were “most important.” 😨 What Happened? Most of my scenario-based questions focused on third-party surveillance audits, while a friend’s exam was mostly about first- and second-stage audits!

💡 Lesson Learned: Be prepared for anything!

🎯 Final Thoughts — The Waiting Game ⏳

Unlike most online exams, results aren’t instant. You must wait at least 15 days to find out if you passed.

📌 Also, did I mention? There’s no score breakdown —it’s either Pass or Fail.

Key Takeaways for Success

✅ Read the standards multiple times ✅ Practice mock exams for time management ✅ Understand concepts deeply (don’t just memorize clauses) ✅ Use PDCA to structure your answers

🚀 Final Words — If I Can Do It, You Can Do It Too!

The ISO 27001:2022 Lead Auditor exam is tough but manageable with smart preparation!

All the best for your preparation and the exam!

Got questions? Drop them in the comments! Let’s help each other succeed.