Okla. Stat. tit. 70 § 15-103
On the question of issuance of said bonds, no person shall be qualified to vote unless he be in all respects a school district elector of such district. In case three-fifths (3/5) of the voters thereof voting at such election shall vote affirmatively for the issuance of said bonds, then the said board of education shall issue the same and not otherwise. The amount of the bonds so voted upon and issued shall not cause the school district to become indebted in an amount, including existing indebtedness, in the aggregate exceeding five percent (5%) of the valuation of the taxable property therein, to be ascertained from the last assessment for state and county purposes previous to the incurring of such indebtedness; but if the school district has an absolute need therefor, such district may, with the assent of three-fifths (3/5) of the voters thereof, voting at such election, incur indebtedness to an amount, including existing indebtedness, in the aggregate exceeding five percent (5%) but not exceeding ten percent (10%) of the valuation of the taxable property therein, to be ascertained from the last assessment for state and county purposes previous to the incurring of such indebtedness, for the purpose of acquiring or improving school sites, constructing, repairing, remodeling or equipping buildings or acquiring school furniture, fixtures or equipment or more than one or all of such purposes; and such assent to such indebtedness shall be deemed to be a sufficient showing of such absolute need. Section 26, Article X, of the Oklahoma Constitution, as amended on April 5, 1955, shall hereafter be in full force and effect. Provided, that any bond election that shall have heretofore been called or held in accordance with the provisions of Section 26, Article X, of the Oklahoma Constitution, as amended on April 5, 1955, is hereby validated if the bonds so authorized at such election have not yet been sold and delivered.
Okla. Stat. tit. 70, § 15-103