Sec. 4. An agreement adopted under section 2 of this chapter may include the following:
(1) An agreement to acquire sites, buildings, and equipment for the sites and buildings by:
(A) purchase;
(B) lease from any of the participating school corporations or charter schools for the term of the agreement; or
(C) lease under the provisions of IC 20-47-2 or IC 20-47-3.
(2) An agreement to repair, equip, and maintain school buildings and equipment.
(3) An agreement that participating school corporations may use funds from their respective operations funds to pay for the costs under subdivision (1) or (2) or for any other purposes authorized under IC 20-40-18.
(4) An agreement with a charter school to exchange any consideration for special education services.