If you want to get admitted to one of the best business schools in the world you need to prepare for the GMAT Exam. なぜですか？ Well they all have the GMAT as an admissions requirement. The GMAT gives the school a clear indication of how well you will do as a first year student in a business related class. The GMAT will test your ability to understand and learn typical mathematical principles, terminology, and how to think. Most students need to prepare for the GMAT and to be sure to get a result that will get you enrolled you will need to study at least 80-100 hours and take a GMAT prep course.