Receipts from the treasurer of the United States, paid to the state or its proper officers pursuant to direction of an act of Congress relating to disposition of funds received on account of the leasing of lands for flood control, navigation and allied purposes, are to be allocated by the State Auditor to each county in accordance with the method of allocation specified by the federal government. Interest or other earnings accrued upon investment of the receipts pending allocation thereof shall be allocated to the recipients of the allocations in proportion to each recipient's allocation of the receipts. The State Auditor shall transfer to the road commission fifty percent of the funds so allocated to each county for the purpose of maintenance of feeder and state local service roads in the area or areas of the county in which the flooded lands are located. Fifty percent of the funds so allocated to any county in which the lands are located are to be paid by the State Auditor to the Board of Education of that county to be expended by the board for the benefit of the public schools of the county.