Faced with the challenge of improving educational systems, the articulation between school and university emerges as a possibility to advance in this regard. This article presents a qualitative study, based on a single, intrinsic case, defined here as a working group (GT, for its name in Spanish), formed by two universities and schools in a Spanish autonomous community. This research describes how an inter-institutional relational space is shaped, and included the participation of school teachers and university scholars, members of the GT.