The article analyzes the process that the Central University College has gone through in relation to its solidarity practices, from more welfare paradigms to the institutionalization and school institutionalization of Socio-educational Practices. In this evolution, facts or milestones are rescued, which reveal various aspects that we consider important to analyze, reflect on and debate, such as: the place of students and social organizations; the link between education, politics and citizenship; the possibility of introducing into secondary education principles of popular education, among other aspects, within the framework of the struggles that have taken place and those that are yet to come.