Section 15-354 - Principals; supplies and materials purchasesA. Notwithstanding any other law, the governing board of a school district may authorize school principals to sign negotiable instruments on behalf of the school district if the negotiable instruments are used for the purchase of supplies and materials that are necessary to conduct the operations of the school.B. Purchases made pursuant to this section are exempt from title 41, chapter 23 and the rules prescribed pursuant to section 15-213.C. A school district that purchases supplies and materials pursuant to this section shall maintain a separate account in its maintenance and operation budget for each authorized school in the district for the purchase of supplies and materials. The amount of available monies in each school's supplies and materials account shall not exceed five thousand dollars.D. Within thirty days of any purchase made pursuant to this section, the principal shall supply the governing board of the school district with a receipt from the seller of the supplies and materials that shows the price paid for each item purchased.E. The principal and the governing board shall ensure that all purchases made pursuant to this section comply with the uniform system of financial records.F. A governing board may delegate the purchasing authority granted pursuant to this section to one or more employees.