This document addresses excuse from PE due to illness

(G) A student who is unable to participate in physical activity due to disability or illness may substitute an academic elective credit (English language arts, mathematics, science, or social studies) or a course that is offered for credit as provided by the TEC, §28.002(g-1), for the physical education credit requirement. The determination regarding a student's ability to participate in physical activity will be made by:

• (i) the student's ARD committee if the student receives special education services under the TEC, Chapter 29, Subchapter A;
• (ii) the committee established for the student under Section 504, Rehabilitation Act of 1973 (29 USC, §794) if the student does not receive special education services under the TEC, Chapter 29, Subchapter A, but is covered by the Rehabilitation Act of 1973; or
• (iii) a committee established by the school district of persons with appropriate knowledge regarding the student if each of the committees described by clauses (i) and (ii) of this subparagraph is inapplicable. This committee shall follow the same procedures required of an ARD or a Section 504 committee.

(F) A student who is unable to participate in physical activity due to disability or illness may substitute an academic elective credit (English language arts, mathematics, science, or social studies) for the physical education credit requirement.

(l) A school district shall require a student enrolled in full-day prekindergarten, in kindergarten, or in a grade level below grade six to participate in moderate or vigorous daily physical activity for at least 30 minutes throughout the school year as part of the district’s physical education curriculum or through structured activity during a school campus’s daily recess....A school district must provide for an exemption for:

• (1) any student who is unable to participate in the required physical activity because of illness or disability; and
• (2) a middle school or junior high school student who participates in an extracurricular activity with a moderate or vigorous physical activity component that is considered a structured activity under rules adopted by the commissioner.

(b-11) In adopting rules under Subsection (b-1), the State Board of Education shall allow a student who is unable to participate in physical activity due to disability or illness to substitute one credit in English language arts, mathematics, science, or social studies, one credit in a course that is offered for credit as provided by Section 28.002(g-1), or one academic elective credit for the physical education credit required under Subsection (b-1)(8). A credit allowed to be substituted under this subsection may not also be used by the student to satisfy a graduation requirement other than completion of the physical education credit. The rules must provide that the determination regarding a student’s ability to participate in physical activity will be made by:

• (1) if the student receives special education services under Subchapter A, Chapter 29, the student’s admission, review, and dismissal committee;
• (2) if the student does not receive special education services under Subchapter A, Chapter 29, but is covered by Section 504, Rehabilitation Act of 1973 (29 U.S.C. Section 794), the committee established for the student under that Act; or
• (3) if each of the committees described by Subdivisions (1) and (2) is inapplicable, a committee established by the school district of persons with appropriate knowledge regarding the student.