[EN] The school of l´Unité d´habitation de Marseille developed over more than a decade. The first drawings date back to 1944 and emerge several project proposals until the final one is reached by 1953. During this process Le Corbusier came across with Céléstin Freinet´s pedagogical principles and decided to study and apply them in his architecture. These techniques promoted by Freinet were lately developed in the school by Lilette Ripert, a fervent admirer of Le Corbusier and contributor of Freinet. She was able to understand the school from its use, and showed it in her writings, drawings, letters and poems. The project finally built develops in parallel to the educational system and has the ability to adapt to all changes without losing its spatial qualities. It is indeed a piece of work done with and for its users. Despite the passage of time, it is still alive.