All forfeitures, unless otherwise provided by law, and all fines collected under general laws; the net proceeds of property that may come to the state by escheat; the rentals of all school lands and other lands granted to the state, the disposition of which is not otherwise provided for by the terms of the grant or by act of congress shall constitute the current school fund of the state. (As amended November 2, 1971, November 4, 1986 and November 5, 1996.)