Okla. Stat. tit. 70, § 70-23-116: Authority tax exempt

The exercise of the powers granted by this article will be in

all respects for the benefit of the people of the state, to serve

their educational and cultural interests and needs, and for the

improvement of their health and living conditions. The operation

and maintenance of projects by the Authority will constitute the

performance of essential governmental functions, and the Authority

shall not be required to pay any taxes or assessments upon any

project or any property acquired or used by the Authority under the

provisions of this article or upon the income therefrom, and the

bonds issued under the provisions of this article, their transfer

and the income therefrom, including any profit made on the sale

thereof, shall at all times be free from taxation within the state.