La Ligue de l'Enseignement is a popular education movement founded in 1866. With over 30,000 chapters, its two million members, and its 102 departmental federations, it is as of today the largest non-profit in France. La Ligue de lEnseignement de Paris offers cultural events, sports and arts to five districts of Paris. 60 people in 17 centers and 22 youth branches can connect to a 4D application that manages familregistration, monitoring the 500 activities offered to 56,000 users, billing, regulations, absences, schedules, statistics and more.