This article presents the discourses which revolve around the contribution of the Ethics class since 2020 to the development of critical thinking. It is based on the case study of the Colegio de Nuestra Señora del Buen Consejo located in Bogotá. This studyis part of a qualitative analysis of the interviews conducted with the educational community (students, parents, and administrators). As results, it is shown that the teaching of ethics from an ethical-critical pedagogy fosters in the student the development of critical thinking and a new personal ethos that leads them to open their gaze towards the construction of a different society from concrete action and social engagement.