(1) To obtain a K-12 principal endorsement an applicant must provide verification of:

(a) a master's degree in educational leadership from an accredited professional educator preparation program as defined in ARM 10.57.102(3) ;

(b) full eligibility for an elementary or a secondary principal endorsement or current endorsement as a Montana elementary or secondary principal;

(c) a minimum of three years of successful experience as an appropriately licensed and assigned teacher at any level within K-12; and

(d) at least six graduate semester credits in educational leadership and curriculum at the elementary level, if eligible at the secondary level, or at least six graduate credits in educational leadership and curriculum at the secondary level, if eligible at the elementary level.