The board of commissioners shall draw the annual appropriations as made by the General Assembly for the support and maintenance of said school and shall annually report to the General Assembly an exact statement of their various acts and doings during the past year, showing exactly how they disbursed the money received and expended, the names of the persons who have received the bounty, the ages and places of residence of such persons and information as to their progress. Vouchers covering all such disbursements shall be filed in the office of the Comptroller General.