Tex. Spec. Dist. Code § 1031.053
To be eligible to serve as a director, a person must:
(2) have resided in the district for at least six months immediately preceding the date on which the person:
Added by Acts 2007, 80th Leg., R.S., Ch. 920 (H.B. 3166), Sec. 1.02, eff. April 1, 2009.