Textbooks - As introduced, prohibits the state textbook and instructional materials quality commission from recommending or listing, the state board of education from approving for local adoption or from granting a waiver for, and LEAs and public charter schools from adopting or using textbooks and instructional materials or supplemental instructional materials that promote, normalize, support, or address lesbian, gay, bi-sexual, or transgender issues or lifestyles. - Amends TCA Title 49.