When said compact becomes operative the governing board of each institution of higher education in this state, to the extent necessary to conform with the terms of the contractual agreement, subject to the limitations of RCW
28B.15.910, may exempt from payment all or a portion of the nonresident tuition fees differential, any student admitted to such institution under the terms of a contractual agreement entered into with the commission in accord with the provisions of Article VIII(a) of the compact.