Tex. Occ. Code § 1704.055
(b) Except as provided by Subsection (c), a board shall meet:
(c) A board in a county with a population of less than 150,000 shall meet:
Acts 1999, 76th Leg., ch. 388, Sec. 1, eff. Sept. 1, 1999.
Acts 2009, 81st Leg., R.S., Ch. 899 (H.B. 383), Sec. 1, eff. June 19, 2009.
Acts 2015, 84th Leg., R.S., Ch. 1011 (H.B. 885), Sec. 1, eff. September 1, 2015.