(a) The board consists of seven directors elected from the district at large.
(b) Unless four-year terms are established under Section 285.081, Health and Safety Code:
(1) directors serve staggered two-year terms;
(2) an election shall be held annually on the May uniform election date under Section 41.001, Election Code; and
(3) the terms of four directors expire in odd-numbered years and the terms of three directors expire in even-numbered years.