Tex. Educ. Code § 45.002

The governing board of an independent school district, including the city council or commission that has jurisdiction over a municipally controlled independent school district, the governing board of a rural high school district, and the commissioners court of a county, on behalf of each common school district under its jurisdiction, may levy, assess, and collect annual ad valorem taxes for the further maintenance of public schools in the district, subject to Section 45.003.