- 29 - agricultural engineering, horticulture, and other applied areas. 2.43-3 Experience in Farming. The teacher of vocational agriculture must have a minimum of three years of farm experience acquired after 15 years of age. 2.44 Provisions for Employing Regular Teachers of Vocational Agriculture. Regular teachers are employed on a twelve-month basis. Counties may approve a teacher's absence from his community for a period of not more than three weeks to attend summer school for professional improvement provided this approval shall not be given annually. Teachers shall obtain approval for leave from the county board of public instruction, and such approval should be officially entered on the board minutes. Each county board of public instruction will allow the teacher a vacation period not to exceed two calendar weeks per year. 2.45 Official Travel Policy for Teachers, Consultants, and Local Coordinators. See Section I, 5. 1. 2.46 FFA or NFA Activities. FFA or NFA activities are accepted as parts of the instructional program. Each department of vocational agriculture shall have either a chapter of Future Farmers of America or New Farmers of America. The teacher of vocational agriculture is responsible for the following accomplishments: Organizing a chapter and securing a charter Securing the necessary paraphernalia Seeing that a program of work is planned Seeing that regular meetings are held and that parliamentary procedure is followed Seeing that the adopted program is followed Seeing that all chapter records are kept and that accurate reports are submitted to the state office. 2.5 Young and Adult Farmer Classes. 2.51 Provisions for Enrollees. 2.51-1 Young Farmer Classes. The minimum number of pupils for a class will be eight. The minimum age for a student will be 16, and the course of study