Tex. Family Code § 34.002

(a) A parent or both parents of a child may enter into an authorization agreement with an adult caregiver to authorize the adult caregiver to perform the following acts in regard to the child:

(1) to authorize medical, dental, psychological, or surgical treatment and immunization of the child, including executing any consents or authorizations for the release of information as required by law relating to the treatment or immunization;

(2) to obtain and maintain health insurance coverage for the child and automobile insurance coverage for the child, if appropriate;

(3) to enroll the child in a day-care program or preschool or in a public or private elementary or secondary school;

(4) to authorize the child to participate in age-appropriate extracurricular, civic, social, or recreational activities, including athletic activities;

(5) to authorize the child to obtain a learner's permit, driver's license, or state-issued identification card;

(6) to authorize employment of the child;

(7) to apply for and receive public benefits on behalf of the child; and

(8) to obtain:

(A) copies or originals of state-issued personal identification documents for the child, including the child's birth certificate; and

(B) to the extent authorized under federal law, copies or originals of federally issued personal identification documents for the child, including the child's social security card.

(b) To the extent of any conflict or inconsistency between this chapter and any other law relating to the eligibility requirements other than parental consent to obtain a service under Subsection (a), the other law controls.

(c) An authorization agreement under this chapter does not confer on an adult caregiver the right to authorize the performance of an abortion on the child or the administration of emergency contraception to the child.

(d) Only one authorization agreement may be in effect for a child at any time. An authorization agreement is void if it is executed while a prior authorization agreement remains in effect.