Pratiques de bullying et adhesions normatives dans quelques classes d'école et de college en Italie

School bullying: does the study of peer harassment in schools delve deeper into the relationships of young people with rules and values? What are the key factors that can help to better identify and understand the phenomenon ? The work starts from a re-definition of school bullying based on the cross contribution of each character acting in the educational scene where the undesirable dynamics take place to propose a local analysis of the problem. Each school bullying initiative is analysed in the context of the specific situation that it create and from which it raises. Attention is also brought to the attribution of meanings as well as to the reciprocal perception of the compliance with the rules by students. Four Italian classrooms are examined taking into account the dynamics of their relationships and conflicts; their organization, rules and discipline; the axiological investments made by young people and promoted by their teachers.