An applicant for a license shall submit an application on a form provided by the board and shall pay the license application fee provided for in K.S.A. 74-5810a , and amendments thereto and shall show to the satisfaction of the board that such applicant:
(a) Is 21 years of age or older; and
(b) has graduated from an accredited high school or has a degree equivalent to graduation from an accredited high school.