With the Lycée de jeunes filles, built in collaboration with Jean Prouvé in the new town of La Source in suburban Orleans, Andrault & Parat proposed a project that was radically different from many of the educational facilities being built at the time. Despite being designed with the same aims for economy and speed of construction, the organization of the complex testifies to an ideal of individual and community fulfilment that was so emblematic of the 1960s. In a complete break with the principle of single-block schools, the architects imagined a splintered plan, with thirty-eight blocks linked by a forum and a multi-purpose hall, designed to host cultural activities, while ensuring both the multi-purpose function of classrooms and the cohesion of the three school units housed there. By dividing it into small units in this way, the school complex was transformed into a landscaped garden that the students could make their own. The architects also sought to "humanize" the dormitories and the school dining room by creating comfortable bedrooms and a restaurant. In order to facilitate construction and in collaboration with the Compagnie Industrielle de Matériel de Transport (C.I.M.T.), Jean Prouvé developed a technique without casing, called "liftslab", which consisted of standard prefabricated slabs superposed, juxtaposed and fixed by cotter pins onto pillars of reinforced concrete. Contrasting with the plain white volumes thus created, the forum offers an irregular and asymmetrical topography, punctuated by strata serving as bleachers.