This paper proposes an analysis of the curriculum policies of gender and sexuality produced in Brazil, aiming at revealing the hegemonic practices and the articulation of different logics, such as theoretical, moral and political, that made these practices possible. Curriculum policies are here conceived as dispute fields which establish and contest meanings about curricular texts, while unstable and polysemic codifications. The present work seeks to show how the emergence and dissemination of socio-juridical discursive logics in the field of sexuality, as opposed to biomedical logics, have influenced Brazilian curricular policies since the 2000s. However, it also indicates that these logics have been strongly opposed, in recent years, for the articulation and intensification of the action of neoconservative movements in the country. This article also proposes the appropriation, within the sphere of this debate, of concepts such as the discursive field, hegemony and identification – as developed by Laclau and Mouffe's Discourse Theory – as resources to enable a more nuanced analysis of the processes of emergence, consolidation and crisis of regimes of dominant sexuality in the curricular field, as well as the permanent tensions, conflicts, negotiations and articulations between different discourses and logics in this scenario. Key-words: Gender; Sexuality; Discourse; Curriculum Policy.