Indiana Code Title 20. Education § 20-27-4-6

Sec. 6. (a) The purchase of a school bus shall be made in the same manner as provided by law for the purchase of school supplies by a school corporation.

(b) If a school bus is purchased under a security agreement, the required notice to bidders or solicitation of bids must set:

(c) The low bid for a security agreement shall be determined by adding to each bidding price the net interest cost and then comparing the totals of the price and interest on each bid.  A separate statement of each price shall be made to enable the governing body to determine the advisability of purchasing a school bus under a security agreement.