The students hate to attend class and their teachers are reluctant to give lessons. But both of them are willing to have holidays. The teachers concluded that the lower the grade is, the poorer its performance gets. These years the schoolchildren tend to be lazy and disobedient. Spoiled at home, they neither fear nor respect their teachers. Nowadays corporal punishment is banned in school, which disarms the teachers and encourages tough kids. For lack of any kind of backing, the teachers only intend not to get themselves into trouble due to taming urchins. How can these pupils be convinced only by words without beating？