examinations >> make students feel that how important education was. In the final examination, students in elementary school and secondary school have to take the test for pass to next grade. If students can't pass the test, they have to repeatedly in class for a year and make their parents feel ashamed. So, the examinations have an influence on concentration of students. Being concentrate in the classroom is the important factor to make students pass the examinations. The adventage of being concentrate in the classroom is students can ask the teacher their questions. It makes students to use their brain for considering and to be responsible person. Because the lesson in the classroom is a fundamental for students to think more and can connect their knowledge. Moreover, being concentrate in the classroom can make students have their own technic for comprehending the lesson such as writing a shot note of the main idea, highlighting the important sentences or congregating with smarter friends who can teach for more understanding.