Tex. Educ. Code § 21.418

The board of trustees of a school district shall adopt a policy that provides a classroom teacher employed by the district the option to elect not to take the teacher's paid personal leave concurrently with unpaid leave the teacher is entitled to take under the Family and Medical Leave Act of 1993 (29 U.S.C. Section 2601 et seq.) for an absence due to pregnancy or the birth or adoption of a child.