This thesis aims at investigating how subjects in the school context discursively construct the concept of (in)discipline. In this research, language is viewed as social practice through which socio-historically situated individuals negotiate meaning (Fairclough, 1989; Moita Lopes, 1996 e 1998). Using the Bakhtinian language perspective (Bakhtin, 1992[1929]), this study aims at recognizing the voices that echo in the discourses constructed by teachers, administrative staff and students. The construction of otherness at school, i.e., how the other is represented in the discourse of different participants of the analyzed school context, is also observed. The discussion of the different theories about (in)discipline was mainly based on Foucault (2000 [1975]), Aquino (1996), De La Taille (1996) and Vasconcellos (2000 and 2003). A historical description of the school institution in different moments is presented (Dussel and Caruso, 2002; Hilsdorf, 2006; Bauman, 1998; Sennet, 2004), situating it in a socio-historical dimension, so as to better understand it and to observe how certain characteristics of school life have been constructed socially, culturally and politically. The research is a case study with focus on a public federal school in Rio de Janeiro, which allows for a deep perspective on the social reality of this specific school through the analysis of different subjects` views about (in)discipline matters. Semi-structured interviews and institutional documents were the research instruments used to gather data for the analysis. Teachers of different ages, areas of knowledge and with different working experience were interviewed, as well as students from different grades, administrative staff, the school principal and a vice-director. The analysis of the data showed that there is a paradigm crisis concerning (in)discipline in the observed school, since this institution reflects a modern view of education, although socio-historically pertaining to a post-modern context. Besides that, the documental school discourse echoes the traditional discipline, which associates discipline with obedience and submission. However, in present day schools, there are also other views of (in)discipline, such as liberal, psychological and interactive, which accompany society`s post-modern characteristics - fluidity, speed, reorganization of time and space. Data analysis also showed that different discourses about (in)discipline are represented in the analyzed context, such as: the discourse of agreements, which considers discipline as the establishment of agreements negotiated by the subjects in the classroom; the uniform discourse, which searches for a monological consonance, impossible in a polyphonic world; and the accusatory discourse, through which the I in the pedagogical relation is constructed positively, while the other, in many cases taken as the family, is represented in a negative way and blamed for the discipline problems. Some other themes appeared in the interviews and guided the data analysis: the social voices, that demonstrate there is a mix of voices in each subject`s discourse (Bakhtin, 1992[1929]), as well as a multissonance of voices among the discourses of the different participants in the school context, showing, for instance, that students are satisfied with the discipline of the school, while teachers demonstrate the opposite. Discursive consonances, dissonances and multissonances observed in the school setting point towards the need for an urgent, comprehensive and reflexive discussion on disciplinary discourse issues, involving all those participating in the educational context.