Sec. 13. JOINT MEETINGS. The County Board of Education shall call an annual joint meeting of the County Board of Education and the Common and Independent District School Trustees at the County Seat or some other convenient place during the month of May of each year, said meeting to be presided over by the chairman of the County Board of Education for the purpose of classifying the schools, and to discuss and make provisions for the location, conduct, maintenance and discipline of schools, and other matters of interest for a constructive school program. The County Superintendent, as secretary of the County Board of Education, shall be required to keep a complete record of all transactions of this meeting on the Minutes of said County Board of Education.