Okla. Stat. tit. 70 § 9-111
The State Board of Education through the Director of Finance is hereby authorized to use the "Special Transportation Revolving Fund" for the purchase of pupil-transportation equipment suitable for the transportation of children to and from the common schools and to make one or more units of such pupil-transportation equipment available for use by any school district in the State of Oklahoma which is either required or authorized by statute to provide free transportation to and from school for children legally residing in such district or legally transferred thereto and entitled to attend school therein, but which school district does not have sufficient funds available, and, because of then existing indebtedness, may not legally issue its bonds for the purchase of other pupil-transportation equipment. Provided, such equipment shall be purchased from the list of approved equipment as provided for in Section 9-109 and at a price not greater than the price so approved. Provided, further, the school board or board of education of any school district desiring to rent such equipment shall select from the approved list the equipment they desire before the State Board of Education shall be authorized to purchase transportation equipment for rental to any district. Provided, further, the State Board of Education shall not be authorized to act in behalf of any school district in the purchase of any transportation equipment except as provided for in this act.
Okla. Stat. tit. 70, § 9-111