The examination is an indication of the quality in Thai students. Every time when finished learning. They have to do a test to arrange that students can understand subject content more or less. Many people believe, the exam can explain about knowledge of students such as students’s ability to pass an examination to must indicate some of them mental powers as well as them grasp of the subjects that they has studied. In addition, the results examination can provide the knowledge level of the students because each student has different skills. Some students who need to take the time to learn more. Some students can learn easily. Leading to provide students who has knowledge in the same level. Most of the schools in Thailand are divided according to the students. It will be tested before admission to grade the level of student’s knowledge for example The College Level Examination Program (CLEP) is a group of standardized tests that assess college-level knowledge in several subject.It is easier to learn along with our friends who have similar score to study in the same class. Students differ widely in terms of how they learn and the most effective teaching is tailored to each individual exat student.