The State Treasurer shall disburse the money so held by him or her upon order of the officer, board or department of this State authorized by act of the Congress of the United States of America or by any rule, regulation, order, judgment or proclamation issued pursuant thereto to direct the expenditure thereof. The moneys held by the State Treasurer pursuant to the Act of Congress cited in paragraph number 4 of Section 1 of this Act, however, shall be allocated and accredited to each county within or partly within a national forest in this State in the proportion that the acreage of each such county included within the national forest bears to the total acreage in all counties included within such national forest as determined by the Department of Natural Resources and certified by issuance of 2 vouchers each equal to 1/2 the amount allocated and accredited to each county. One voucher shall be issued to the county treasurer thereof and such amount shall be appropriated and used only for the construction, reconstruction, improvement, maintenance or repair of public highways within such county as the county board shall direct; the other voucher shall be issued to the county superintendent of schools of such county and by him or her allocated and paid over to the treasurers of the school districts or parts of districts maintaining grades 1 to 8, each inclusive, in such county in the proportion that the area of such land within the boundaries of each school district or portion of such district bears to the total area of such land within the county.