Since the beginning of the present century, relevant legal and political developments have been taking place that promotes the recognition, respect, and valuation of sexual and gender diversity; However, these efforts have been insufficient to transform the reality of the discrimination and violence that these days will face in these population sectors in school settings; this, mainly, by the indifference with the teachers assume this subject or their ideological prejudices. A situation that is highlighted in this article as a result of the autoethnographic investigative exercise carried out during a training process for early childhood teachers from different Secretariats of Education at the national level. With this work, we hope to raise awareness of the urgent need to work to train teachers around the construction of sexual citizenships from the educational setting.