The school is a product of civilization. It became necessary because of the division of labor caused by the multiplication of the interests of mankind which made it impossible for the home to continue wholly to care for the training of its children. The history of education must not merely treat of the development of the school, but it must consider education in its broader meaning; that is, as a history of civilization. For this reason some of the great educators of the world who have not been school teachers, must receive consideration.