For grades 4 to 12, _forty-six_ teachers would be employed: For English, 4; for mathematics, 2; for Latin, 1; for German, 1; for French, 1; for Spanish, 1; for history, 1; for fourth-and fifth-grade English, mathematics, history, and geography (either departmentalized or undepartmentalized), 8; for chemistry, 2; for botany, 2; for physics, 2; for zoölogy, 2; for freehand drawing, 2; for architectural drawing, 2; for mechanical drawing, 1; for music, 2; for expression, 2; for cooking, 1; for sewing, 1; for manual training (not including the industrial shops), 2; for physical training, 6. Four teachers would be employed in the kindergarten department. A unit plant of this size would require one executive building principal, and one supervisor of instruction. Two school nurses and a school physician would also be employed. Such a distribution of the teaching force would be considered the ideal for a unit school plant of all grades, accommodating between fourteen hundred and twenty-two hundred and fifty children in two duplicate schools. It will be observed that this most careful specialization of teaching does not increase the number of teachers required. At least fifty-six teachers, with a number of special teachers, would be required in any school of fifty-six classes, run on an undepartmentalized plan. The Gary plan, therefore, without increasing the number of teachers, provides for a much higher expertness of service. Indeed, Superintendent Wirt has worked out a form by which a school of thirty-two classes would only require thirty-two teachers, including the special teachers, and with most of the work departmentalized. Programs may be arranged for schools with any number of classes. The number of classrooms and teachers required will be approximately as follows, including supervisors, special teachers, librarians and playground instructors:— A 12-class school requires 8 classrooms and 12 teachers. A 24-class school requires 15 classrooms and 23 teachers. A 36-class school requires 22 classrooms and 33 teachers. A 48-class school requires 29 classrooms and 43 teachers. A 60-class school requires 36 classrooms and 54 teachers. A 72-class school requires 43 classrooms and 64 teachers.