School rules are created to control the students. First, as a student, you must try to arrive on time for school and lessons. Secondly, every student work hard nd allow other to do the same. Then, you could try to be polite to teachers, each other and visitors. Thirdly, follow the instructions from the teacher. Nowadays, many schools have uniforms, so the students also wear the schol uniform when they come to school. School is also called a second home for students, and they would keep the school buildings and grounds clean. To build a good school, we have good behavior all the time because it is a skill to control our emotions. In addition, students must not take foods or drinks into classrooms and not use mobile phones inside the school building. To protect the students, school also prohibit smoking at school or at home. Finally, these are important rules to help students be good in their future.