Art. 9. Teachers and assistants imparting instruction shall be appointed as follows:
(a) There shall be a teacher and so many assistants for each branch as shall be made necessary by the attendance.
(b) For the instruction in technical accounting related to each vocation there shall be employed special teachers only where 15 or more students are enrolled for each course, and they shall receive salaries only when actually teaching. The same teachers shall be in charge of the various related branches of technical instruction in the shops.
Art. 10. The courses in the secondary vocational institutes for boys shall include—
(a) The elementary and middle instruction for pupils who have not had them.
(b) Physical exercises and military drill.
(c) Vocal and instrumental music.
Art. 11. The courses in the vocational institutes for girls shall include—
(a) Primary instruction for such pupils as have not had it.
(b) Vocational drawing and modeling.