(1) In order to maintain a valid teacher's license under § 6-17-401, a person who retires while possessing a valid teacher's license under § 6-17-401 shall not be required to complete approved professional development required by rule of the State Board of Education.
(2) A person who retires while possessing a valid teacher's license under § 6-17-401 and returns to a licensed employment position with a public school district shall complete within the school year of the return to employment the professional development required for the year in which the person returns to licensed employment.
(3) The person shall complete all professional development required during his or her licensed employment.
(4) A retired teacher whose license has expired may renew his or her license upon completion of the professional development required for the year in which the person applies for license renewal.