This thesis deals with the role of school and teachers in the prevention of violence among students. Violence is defined as a rough attack on another person, which results in injuring or inflicting physical pain on that person. Violence is a very widespread phenomenon in the world, but also in our country. It is on a significant rise and is increasingly occurring in more extreme forms. The places where violence among students takes place are most often in the school itself, in the area around the school such as the school playground, on the way to school or on the way home. Students are often abused by peers, rejected or teased for their diversity. They feel rejected, ashamed, scared, angry and find it difficult to find close friends. The abuser can be an individual or a group and it is very important to recognize him in time. Neglect is the most common form of child abuse. It occurs when some of the child’s basic life needs are not adequately met, which can lead to serious health problems. Family relationships are very important for a child’s healthy development. Lack of attention and warmth can be a good foundation for the development of violent behavior. Family, together with the school, teachers and professional associates must be a model of acceptable behavior. Children learn by example, so it is very important to take all necessary measures to make the classroom atmosphere and relationships among children in school better. By recognizing, stopping and preventing violence, we help children to minimize the consequences of violence. In this way, we send a clear message that their quality upbringing is important to us and that we live in a society that does not tolerate violence in any form. Teachers and professional associates have a duty to prevent and stop all forms of school violence. If necessary, they should also cooperate with the social welfare center and the police.