The board of equalization shall consist of three (3) members appointed by the county circuit court, as provided by section 58.1-3373, Code of Virginia.  Each member shall be a resident of York County, a majority of whom shall be freeholders. At least one member shall be a commercial or residential real estate appraiser, or other real estate professional, builder, developer, or legal or financial professional, and in order to be eligible for appointment shall attend and participate in the basic course of instruction for assessing officials as required by section 58.1-3374, Code of Virginia.  In no case shall a person serve as a member of the board for more than nine (9) consecutive years, and such person shall not be eligible for a period of reappointment for a period of three (3) years.  The board shall elect a chairman and a secretary from among its members.  In addition, at least once in every four (4) years of service on the board, each member shall take continuing education instruction provided by the Virginia Tax Commissioner pursuant to section 58.1-206, Code of Virginia.