You will not have much difficulty, in a school of three or four hundred scholars, to find several class lists all in the same grade and same age. This will also permit the selection of certain scholars somewhat in accordance with their social standing. Probably one or two classes of each age will not all stand in the same grade as in the public schools, and there will be others who are not in the public or any other school. The judgment of the superintendent or committee must guide; age probably will be much the best guide, and one, at least, that scholars will recognize and consent to more readily. As fast as classes are formed the names are placed in their locality on the diagram or school room plan. Sometimes, in order to keep the grade by years, the classes may not number six and sometimes may exceed six. All the classes are selected in the same way, a class of boys, then a class of girls, and the names of the scholars placed on the diagram as illustrated. Scholars above fourteen and under seventeen are comprised in another department, and should be grouped in the same way, only into much larger classes. Where separate rooms can be had fifteen or twenty will not be too many--young ladies and gentlemen separate. In small schools, of course, the classes would be less in number. The age will largely govern in this grade; only such as are advanced ahead of their class will go into higher grades. The names for each class should be placed in the space they are to occupy on the diagram.