The objective of this dissertation is to understand the conceptions of literacy held by literacy teachers from the public school system of Duque de Caxias, in the state of Rio de Janeiro, in conjunction with what is in the curriculum policy documents: the one formulated in 2002 and that is still effective until this day; the one under construction and the National Common Core Curriculum (BNCC). Among the specific objectives, the study aimed at perceiving the reasons that led the Municipal Department of Education of Duque de Caxias to restructure the curriculum of the school system, what the conceptions of literacy held by the teachers of the public school system and by the curriculum policy documents are. In order to achieve these objectives, the study used a qualitative methodological approach through two data collection techniques: the analysis of the curriculum documents and of the interviews. The interviews were conducted with the use of semi-structured scripts with literacy teachers and pedagogical coordinators of the public school system. Besides the difficulties caused by the new coronavirus pandemic, the study was successful in getting a better understanding of the conceptions of literacy held by professionals from the public school system of Duque de Caxias. Moreover, the study also managed to identify the main theoretical bases of literacy presented in the curriculum documents and in the National Common Core Curriculum (BNCC).