Tex. Spec. Dist. Code § 9012.051
(a) The district is composed of the territory described by Section 1, Chapter 554, Acts of the 59th Legislature, Regular Session, 1965 (Article 8280-315, Vernon's Texas Civil Statutes), as that territory may have been modified under:
(b) The boundaries and field notes of the district form a closure. A mistake in the field notes or in copying the field notes in the legislative process does not affect:
Added by Acts 2007, 80th Leg., R.S., Ch. 920 (H.B. 3166), Sec. 1.12, eff. April 1, 2009.