This article aims to review some historical and current pedagogical discourses produced in the field of sex education in Argentina, from the end of the 20th century until the beginning of the 21st. To do this, we will stop at some official discourses beginning in the 1980s, to analyze the standardized treatment of sexuality and hegemonic gender identities, in the letter of proposals and ministerial materials. We are also interested in showing the interventions of Catholic intellectual agents in the official curriculum, when sex education was first included in the national curriculum in various subjects in the framework of educational reforms in the middle in the 1990s. The article continues with the analysis of the current integral perspective in the approach to the education of sexuality (approach to which we ascribe) especially, after the approval of the historic Law of Integral Sexual Education (ESI) 26,150 in 2006, which it implied the transversal and compulsory inclusion of sex education in all the schools of the country, making it a fundamental right. The article ends with the proposal of some perspective passages that we believe are necessary in some ways to enhance an anti-normative sex education that enables and teaches ways to be freer.