1. Authority to call a regional school unit referendum. The regional school unit board shall initiate a regional school unit referendum:
A. To approve the issuance of bonds or notes for school construction projects;
B. To approve a change in the selection of a school building site;
C. To authorize the regional school unit board to contract for the schooling of secondary pupils;
D. To accept or reject a prospective gift; and
E. To borrow funds for minor capital costs as defined in section 15672, subsection 20‑A.