(a) The State Board of Education by rule shall prohibit participation in a University Interscholastic League area, regional, or state competition:
(1) on Monday through Thursday of the school week in which the primary administration of assessment instruments under § 39.023(a), (c), or (l) occurs; or
(2) if the primary administration of the assessment instruments is completed before Thursday of the school week, beginning on Monday and ending on the last school day on which the assessment instruments are administered.
(b) The commissioner shall determine the school week during the school year in which the primary administration of assessment instruments occurs for purposes of Subsection (a).

(c) The commissioner shall adopt rules to provide the University Interscholastic League with a periodic calendar of dates reserved for testing for planning purposes under this section. The periodic calendar must be provided at least every three years on or before May 1 of the year preceding the three-year cycle of reserved testing dates.
(d) In adopting rules under this section, the commissioner shall:
(1) include a procedure for changing, in exceptional circumstances, testing dates reserved under the periodic calendar;
(2) define circumstances that constitute exceptional circumstances under Subdivision (1) as unforeseen events, including a natural disaster, severe weather, fire, explosion, or similar circumstances beyond the control of school districts or the agency; and
(3) establish criteria for determining whether a University Interscholastic League area, regional, or state competition must be canceled if that event conflicts with a changed testing date.
(e) This section does not apply to testing dates on which assessment instruments are administered only to students retaking assessment instruments.