The Class Period
When the length of the school day has been determined, the problem of subdividing the day presents itself. The subdivision must first of all recognize the claims of various subjects. The type of problem which arises at this point was discussed at length in the chapters on the curriculum, and we need not here discuss further the claims of subjects. We turn now to the general problem of class organization which can be formulated in the question, How long can a student profitably try to concentrate his attention on a single form of activity?