This act shall not be construed as applying to any lands or properties acquired under the act of congress, known as the Idaho Admission Act, or in the subsequent operations of the various endowment funds of the state. Nor shall this act apply to any lands or properties in the custody of the state board of education and the board of regents of the University of Idaho in their corporate capacity; provided however, that the state board of education and the board of regents, desiring to avail themselves of the facilities of this act, for the sale, exchange or transfer of any such properties, may proceed to negotiate a sale, transfer or exchange with the state board of land commissioners as would any other tax-supported agency. If the state board of education and the board of regents of the University of Idaho does not avail itself of the facilities of this act, then the state board of education and the board of regents shall use a process for disposal of real property that includes, at a minimum, a required appraisal and public notice of the proposed real property disposal prior to disposal; and for property disposals that are not part of an exchange or transfer, consideration given to granting a first option to purchase to local, state and federal governmental entities.