(a) The commissioner of education shall specify the schedule for testing and field testing that is in compliance with the Texas Education Code (TEC), §39.023(c-3)(1) and (2), and supports reliable and valid assessments.(b) The superintendent of each school district or chief administrative officer of each charter school and any private school administering the tests as allowed under the TEC, §39.033, shall be responsible for administering tests.(c) The commissioner of education may provide alternate dates for the administration of tests required for a high school diploma to students who are migratory children, as defined in the TEC, §39.029, and who are out of the state.(d) Participation in University Interscholastic League area, regional, or state competitions is prohibited on any days on which testing is scheduled between Monday and Thursday of the school week in which the primary administration of assessment instruments under the TEC, §39.023(a), (c), or (l), occurs.