(a) Any employe of any school district, who shall have been regularly employed by any school district or career and technical school for any period, and who shall volunteer for military service in the armed forces of the United States of America in time of war or during a state of national emergency or who shall be inducted for military service in the Armed Forces of the United States of America at any time, shall, within thirty (30) days after the receipt of notice to report for duty, send a copy of such notice to the secretary of the school board by which he is employed.

(b) The secretary of the school board shall verify the information contained in the notice from any employe concerning selection or induction into military or naval service, and, upon verification of such facts, shall record the same in the records of the school board and send notice thereof to said employe.

(c) Without further action by the board of school directors, the employe inducted into military or naval service shall forthwith be considered to be upon leave of absence for the entire duration of such service. All rights and privileges shall be reserved to such employe as if he continued in the service of said school board: Provided, That no such leave of absence shall be granted unless said employe shall in writing agree upon termination of the said leave to return to employment in said school district for a period of not less than one year.