The literature points out that good family/school relationships can maximize the conditions for children's better learning and development. It also emphasizes that both institutions need to be more integrated but respect the characteristics of each other at the same time, and that researches about the interrelationship between both institutions need to be carried out.The purpose of this article was to investigate the processes of subjectivities production that involve the protagonists of the family/school relationship in Elementary School. The participants were nine teachers and nine mothers of students from the first stage of Elementary Education from nine municipal schools located in a city in the São Paulo State. In each school, one teacher and one mother were interviewed. The interviewees' reports were recorded in audio and were submitted to analysis and interpretation based on the principles of Cartography. Passos, Kastrup & Tedesco (2016) point out that every research is an intervention and that a research always dive in the experience of subject and object, theory and practice, in the same plan of production. In this sense, the authors present the Cartography as a method of investigation created by Gilles Deleuze and Félix Guattari (1985), that aims to follow the processes and not to represent objects, in other words, it is always about investigating the production process. The results were presented in two parts. First, the teachers, and then, the mothers. Considering the methodological approach, the data were analyzed looking for singularities, the contributions were summarized under each theme mentioned in the interviews. The purpose of each interview was to extract experiences and processualities. Due to the fact that the theme family/school relationship is still treated in a stratified way by a hegemonic culture, we reiterate the importance and contribution of this study in order to make public politics according to the people who experience those problems every day, such as parents and teachers. We also reiterate that teachers' training needs to talk about new partnership conceptions aiming the families' need according to those families. This study also highlights the importance and the contribution that school psychology should have in the public school environment.