Instead of the prudential committee required by law to be elected, the Winooski School District shall be governed by a Board of five Trustees, to be elected at large, and that three of the positions will hold office for a term of three years each and that two of the positions will hold office for a term of two years each, commencing on the day elected. All vacancies caused by resignation, death, or otherwise shall be filled for the remainder of the unexpired term, if any, at an annual or special meeting, duly warned for that purpose, but the Board of School Trustees by a majority vote of all its remaining members may appoint a qualified person to fill the vacancy until the person elected to serve the remainder of the unexpired term takes office. The Trustees shall have the powers and perform all the duties of a prudential committee, shall choose one of their members to be President, and shall appoint a Secretary of the Board of Trustees who shall hold office for the term of one year and until their successors are chosen and appointed.