In this work, had been observed all kind of violence in school life of adolescents of middle class, middle class decrease and poor classroom, in two schools of the city of Brasilia, specifically in the lessons of physical education, analyzing itself, mainly, that there?s practical violent or the aggressive ones between the pupils, of the professor for the pupil and also of the pupil for the professor. This research of qualitative line had beginning with the observation of the researcher on the behavior of the pupils and of the professor in the school physical education, inside and outside of the school, being written down the forms of aggressions, who practised them and to who they were directed. At a second moment, the more violent or more aggressive pupils, in accordance with the notations and comments, had been invited to participate of an interview to think on the subject in question, as well as the involved professors. Actions and attitudes of discrimination, intolerance, rudeness had been evidenced, physical, verbal and symbolic aggressions in the daily one of the half pertaining to school. These attitudes, that can, sometimes, to be considered as innocent amusements, tricks of bad taste and characteristics of the adolescents, also can finish in violence, depending on the one vision involved them, if it feels itself or not attacked or offended and how he reacts to the provocation. The two schools had presented similarities and differences, being latent the presence, in both, of the aggressiveness or violence in its day-by-day, in greater or minor action number.