(a) The board of trustees of a school district and the governing body of an open-enrollment charter school, to the extent applicable, shall annually review the clearinghouse published under § 21.4514 and adopt a professional development policy that must:
(1) be guided by the recommendations for training in the clearinghouse;
(2) note any differences in the policy adopted by the district or school from the recommendations in the clearinghouse; and
(3) include a schedule of all training required for educators or other school personnel at the district or school.
(b) To the extent of any conflict, a frequency requirement for the completion of training provided by statute prevails over a frequency requirement for that training included in the policy adopted by the board of trustees of a school district or the governing body of an open-enrollment charter school under Subsection (a).

(c) The commissioner may not adopt rules regarding a required frequency for the completion of training unless:
(1) a frequency is provided by statute for that training; and
(2) the commissioner is granted explicit rulemaking authority related to that training.