Peer bullying is defined as a problem of public health that affects human health negatively in the short and long term, increasing day by day in schools. Peer bullying is the use of force by intentionally and constantly physical, verbal, behavioral power over the weak. This situation is a serious trauma for the students and the effects are not only limited to the school period but also life-long and also affect the public health negatively. Peer bullying negatively affects not only the students but also their parents, teachers and school administrators. Peer bullying can be prevented by the development of effective policies that include education and the community's stakeholders (students, teachers, administrators, parents, nurses, non-governmental organizations). In society; it is important that every child receive education, training, in a reliable environment, and given awareness of respect for basic human values and differences as well as the right to life. In this article will focus; the definition of peer bullying, the effects of bullying on children's health and academic achievement; and the role of public health and school nurses in the development of prevention and intervention programs for peer violence.