ISACA uses and reports scores on a common scale from 200 to 800.Review the points below to identify the lowest, passing, and perfect scores. A score of 800 represents a perfect score with all questions answered correctly. A score of 200 represents the lowest score possible and signifies only a small number of questions were answered correctly. You must receive a score of 450 or higher to pass the exam which represents the minimum standard of knowledge. A candidate receiving a passing score can then apply for certification if all other requirements are met (see section How to become Certified for more details).