In recent years, sex among the young people become the issue, serious problem but also taboo to talk. This condition is really danger if it is out of control, because it can broke the young generation. To prevent its problem, sex education is strongly needed. Sex education is the act of informing younger and adult generations about everything they need to know about sex. It includes other sensitive issues like sexual health, sexual reproduction, sexuality and others that parents often feel uncomfortable talking with their children. Therefore, it becomes the responsibility of schools to address this issue, and inform and educate students about it as much as possible. The purpose of this paper is to provide the arguments why sex education should be taught in school. This paper also provide the counter arguments of the opponents of banning taught sex education at school and some points of arguments to support taught sex education at school. Those who disagree if sex education should be taught in schools argues that it is not the place of school to talk about sex. It is belong to parent’s responsibility because they know what information is needed by their children. In any case, many parents feel not comfortable to talk it. It seems that most parents are either strongly against or strongly in favor of sex education classes, but very few parents are in the middle ground. Moreover, most students are mature enough to handle a sex education course, but sex education should not be