One of the most significant arguments in support of the Activity School is the fact of its simultaneous appearance —admittedly sporadic—in a number of widely separated countries. Whatever the particular brand of philosophical creed or psychological theory that served to prompt it,—and some of these have subsequently been shown to be mistaken,—it has appeared everywhere in the same recognizable shape. It is not too much to claim that the Activity School was an international symptom in modern education. In an attempt to secure cohesion in its own ranks and to extend its scope by active propaganda it even founded an organization of its own, “La Ligue Internationale pour l’Education Nouvelle”, initiated in 1921. But the attempt was attended with no real success.