College Scholastic Ability Test (the below CSAT) measures the student's ability which will study in the university.The problem of the CSAT is causing a many effect in school education. But the principle of problem of CSAT is not known well. The teachers advise the students to grasp the pattern of the questions. It will be successful to an examination. It is important to understand the principal of problem rather than the test book.The students oneself studying which search a cause and a result is very good. The CSAT is the wild problem and a duty which our societies will be finally. The Korean language teachers do not become the students regarding the future of the themselves only dissatisfaction the printed style of writing. The CAST from Korean situation is the system which is not the possibility of avoiding in the students. It is that knows the problem point of the learning skill, it improves the cooperative effort necessary with the direction which is developed more.