In order to appropriate the development of professionalizing competences in teachers in the society of knowledge, the co-responsibility between university and school has to be consolidated. We put forward a training model that encourages students to carry out innovating projects, deeply connected with the school reality, and that integrates the Final Degree Project with the Practicum in their last year of studies. To implement this model, it is essential to define the roles of the university teacher, the school teacher, and the student. In this sense, we carried out a prospective study in 146 schools placed in Barcelona, with results showing a high degree of consistency with our initial assumptions that link the student’s work to the school interests and projects, and also increase de coordination school-university as well as the school teacher’s leadership.