I have been taking mock exams and my scores are hovering around 65 to 70 percent. I know ISACA uses a scaled scoring system, but is there a rough target I should aim for to ensure I actually pass on test day? It is hard to gauge my progress when I do not know how many questions I need to get right.
The CISM exam uses a scaled scoring system ranging from 200 to 800, where a minimum score of 450 is required to pass.
5 answers
Stop chasing a specific percentage and focus on mastering the underlying domain logic through these methodical steps.
- Analyze the official ISACA question bank to identify the specific management perspective expected for each domain.
- Review every incorrect answer to understand why your chosen logic deviated from the ISACA philosophy.
- Maintain a consistent study cadence that prioritizes understanding the core concepts over rote memorization of practice questions.
ISACA uses a scaled score of 200 to 800, with 450 being the minimum requirement for a passing grade. Aiming for 65 to 70 percent on practice exams is dangerous because the actual exam relies heavily on the management-centric mindset that ISACA mandates, which often differs from technical intuition.
I remember sitting for my CISM years ago, and I spent weeks obsessing over those exact same practice percentages. I felt like I was spinning my wheels until I realized that the questions were testing my ability to think like a manager, not an engineer.
Once I shifted my perspective to prioritize business risk over technical perfection, the scores stopped mattering as much as the logic. You really need to stop counting questions and start identifying the governance-based reasoning behind each choice.
Relying on a percentage score can be misleading because the actual exam adapts its difficulty and weighting based on the specific psychometric model ISACA employs. A raw score of 70 percent might be sufficient if you are consistently scoring that on the most difficult practice sets, but aiming for 80 percent provides a safety buffer against the ambiguity of the actual testing environment.
Ultimately, process consistency is more important than raw numbers; if your practice tests are showing gaps in your understanding of the CISM job practice domains, you should address those knowledge holes rather than fixating on the pass threshold.
If you are hovering at 70 percent, you are basically flipping a coin on test day. ISACA does not publish the exact number of questions you need to get right because the exam is scaled, but you really should be hitting mid-80s on practice material before you waste your money on the exam fee. Most people fail because they are still stuck in technical mode instead of the management mindset ISACA demands.

