The authority conferred by section [ 304A-3206 ] shall be exercised only pursuant to written agreement between the commission and an agency of the State having responsibility for or duties with respect to programs for assisting residents of the State to obtain higher education. Any such agreement shall include provisions for the payment of tuition and any other costs, and no such agreement shall be made that commits the State or any agency or officer thereof to any obligation for which funds have not been appropriated or otherwise made available in accordance with law.