Tex. Education Code § 55.23

This subchapter shall be cumulative of all other law on the subject, but this subchapter shall be wholly sufficient authority within itself for the issuance of the bonds and the performance of the other acts and procedures authorized hereby, without reference to any other law or any restrictions or limitations contained therein, except as herein specifically provided; and when any bonds are being issued under this subchapter, then to the extent of any conflict or inconsistency between any provisions of this subchapter and any provision of any other law, the provisions of this subchapter shall prevail and control; provided, however, that any board shall have the right to use the provisions of any other laws, not in conflict with the provisions hereof, to the extent convenient or necessary to carry out any power or authority, express or implied, granted by this subchapter.