The Department may enter into contracts with the government of the United States of America or its agencies for the leasing to the Department of machinery, tools, equipment, land, buildings or other items to be used in the school system of this State. The contracts so entered into may be for such terms not exceeding 20 years and on such conditions as the Department may deem advisable. The Department may sublease to reorganized school districts of the State the items so leased for such terms and on such conditions as the Department may deem advisable.