(1) The unexpired term of a valid teaching license held by a person engaged in teaching at the time that person is called into active military service shall be extended in proportion to the length of active military service. Official notification of the beginning and termination dates of active military service must be submitted on release from active duty to the superintendent of public instruction to secure such extension of licensure.

(2) The unexpired term of a valid teaching license shall be extended one year for each year of active military service not to exceed five years. In calculating the unexpired term of a license for military extension purposes, an expired license year shall be any year in which a teacher has taught more than one-half of the school year.

(3) The extension period of the unexpired term of any license becomes automatically effective on the previous July 1 of the year of termination of active military service.  On expiration of this extension period, renewal requirements must be met for further licensure.