Okla. Stat. tit. 70 § 15-106.1
Any school district may become indebted for the purpose of purchasing equipment and may issue its bonds, as provided for by law, in any amount not exceeding, with existing indebtedness, ten percent (10%) of the valuation of the taxable property within the school district, as shown by the last incurring of indebtedness. The bonds shall be made to mature within a period not to exceed five (5) years from their date. It is hereby declared that the use of the word "equipment" in Section 26, Article X of the Oklahoma Constitution was intended to include: library books, textbooks, school-owned uniforms, computer software, electronic media content, perpetual or continuous district software license agreements and web-based software subscriptions with a term of more than one (1) year but not more than five (5) years, the acquisition of telecommunications devices and components to be used to enhance classroom instruction and maintenance/service contracts which are included as a part of the equipment purchase price and any associated hardware and software necessary for implementation and training and any maintenance agreements. This provision shall not restrict a school district from issuing bonds with a maturity of greater than five (5) years for the purchase of equipment not listed in this section. If the maturity of the bond is greater than five (5) years, the maturity of the bond shall not exceed the effective life of any equipment purchased with the proceeds.
Okla. Stat. tit. 70, § 15-106.1