Tex. Education Code § 37.004

(a) The placement of a student with a disability who receives special education services may be made only by a duly constituted admission, review, and dismissal committee.

(b) Any disciplinary action regarding a student with a disability who receives special education services that would constitute a change in placement under federal law may be taken only after the student's admission, review, and dismissal committee conducts a manifestation determination review under 20 U.S.C. Section 1415(k)(4) and its subsequent amendments. Any disciplinary action regarding the student shall be determined in accordance with federal law and regulations, including laws or regulations requiring the provision of:

(1) functional behavioral assessments;

(2) positive behavioral interventions, strategies, and supports;

(3) behavioral intervention plans; and

(4) the manifestation determination review.

(b-1) If a school district takes a disciplinary action regarding a student with a disability who receives special education services that constitutes a change in placement under federal law, the district shall:

(1) not later than the 10th school day after the change in placement:

(A) seek consent from the student's parent or person standing in parental relation to the student to conduct a functional behavioral assessment of the student, if a functional behavioral assessment has never been conducted on the student or the student's most recent functional behavioral assessment is more than one year old; and

(B) review any previously conducted functional behavioral assessment of the student and any behavior improvement plan or behavioral intervention plan developed for the student based on that assessment; and

(2) as necessary:

(A) develop a behavior improvement plan or behavioral intervention plan for the student if the student does not have a plan; or

(B) if the student has a behavior improvement plan or behavioral intervention plan, revise the student's plan.

(c) A student with a disability who receives special education services may not be placed in alternative education programs solely for educational purposes.

(d) A teacher in an alternative education program under Section 37.008 who has a special education assignment must hold an appropriate certificate or permit for that assignment.