The prep tool that I feel contributed most significantly to passing all parts of the exam on the first attempt, and also achieving the William S. Smith Certificate of Excellence, is the Gleim Review System. I used several training systems and methods to prepare for the CIA exam including in person training, live training webinars and online training. Gleim’s extensive bank of questions and the detailed, insightful answers provided preparation for both the content and the exam format. I would definitely recommend the Gleim Review System to anyone preparing for the CIA exam.