Tex. Educ. Code § 39.232
(b) A school campus or district is not exempt under this section from:
(3) a requirement, restriction, or prohibition relating to:
(d) The commissioner may exempt an exemplary school campus under Subchapter G from elementary class size limits under this section if the school campus submits to the commissioner a written plan showing steps that will be taken to ensure that the exemption from the class size limits will not be harmful to the academic achievement of the students on the school campus. The commissioner shall review achievement levels annually. The exemption remains in effect until the commissioner determines that achievement levels of the campus have declined.
Acts 2009, 81st Leg., R.S., Ch. 895 (H.B. 3), Sec. 59, eff. June 19, 2009.
Acts 2017, 85th Leg., R.S., Ch. 324 (S.B. 1488), Sec. 21.003(25), eff. September 1, 2017.