Nowadays there are server problems with student behavior at school in many countries such as less respect to teachers school violence production of sex clips in class and so on .Parents should spend more time with their children, care about their children's study and relationships and help them overcome their hard periods .lt is recommended that educational programs such as providing sex education, rewarding good examples of students and honoring the students' respect to teachers should be widely held at school and that healthy activities and competitions should be encouraged to lead students to good lifestyles.