This research aims to seek understandings about the power of veto in the school context and the paths that practitioners of the teaching-learning process can build for dialogic learning. Aligned with the Exploratory Practice approach, I understand students and teachers as practitioners of the teaching-learning process (ALLWRIGHT and HANKS, 2009), since both play important roles in the process. Some questions are central to guide my study: What is the power of veto? Who is it practiced by? Why and in what way? What are the consequences of this power for students and teachers? How are we to work in the face of power of veto? The research is aligned with the concept of discourse that highlights the use of language as social practice. Thus, it is in the relationship between discourse and society that I analyzed the power of veto practiced and suffered by participants in the teachinglearning process, whether they are students or teachers, among others (MOITA LOPES, 2003). Understanding that students have the ability to act as builders of their own learning process (MILLER, CUNHA e ALLWRIGHT, 2020), it is essential to engage students and teachers in order to seek understandings about coconstruction paths for dialogic learning. The research took place in a public school in the state of Rio de Janeiro where I acted as a Portuguese language teacher in high school classes. Data were generated by engaging in exploratory conversations with participating students and teachers about their experiences in relation to the power of veto. The conversations were audio-recorded for later transcription according to the conventions referring to the Jefferson Conversation model (LODER, 2008). In addition to its theoretical-methodological contributions, this study will be able, above all, to stimulate the students capacity as protagonists as well as their investigative attitude regarding the issues that are relevant to them.