An inquiry is being made regarding the subjective components which make up the social dynamics of violence lived by adolescent students of 13 and 14 years of age, pupils of first year at a Secondary School of the 7° Region in Chile. Techniques of qualitatives investigation are used in the compilation and the analysis of the information, complemented with the use of a questionnaire to a 243 studentg of the establishmet. Among the findings it is sustained that the violence dynamics among peers, supposes two dominant rules which form part of the subculture of the school's adolescents: 1) Violence is normal; 2) Living together with one's peers means a permanent relationship among equals. Generally the "symmetrical ideal" is a relevant fact to configurate the violence dynamics.