(a) The provisions of §§112.42-112.45 of this subchapter shall be implemented by school districts beginning with the 2024-2025 school year.(b) No later than July 31, 2023, the commissioner of education shall determine whether instructional materials funding has been made available to Texas public schools for materials that cover the essential knowledge and skills for science as adopted in §§112.42-112.45 of this subchapter.(c) If the commissioner makes the determination that instructional materials funding has been made available under subsection (b) of this section, §§112.42-112.45 of this subchapter shall be implemented beginning with the 2024-2025 school year and apply to the 2024-2025 and subsequent school years.(d) If the commissioner does not make the determination that instructional materials funding has been made available under subsection (b) of this section, the commissioner shall determine no later than July 31 of each subsequent school year whether instructional materials funding has been made available. If the commissioner determines that instructional materials funding has been made available, the commissioner shall notify the State Board of Education and school districts that §§112.42-112.45 of this subchapter shall be implemented for the following school year.(e) Sections 112.34, 112.35, 112.38, and 112.39 of this subchapter shall be superseded by the implementation of §§112.42-112.45 of this subchapter.