To pass the CQI IRCA Lead Auditor exam , you must demonstrate both technical knowledge of the specific ISO standard (e.g., ISO 9001, 14001, 45001) and practical auditing skills. The exam typically requires a 70% overall pass mark , with at least 50% in each of its four sections. TechKnowledge Services Group Core Exam Structure The exam is generally split into four distinct sections: Section 1 (Concepts):