By a two-thirds vote of the members-elect and upon compliance with this section, the board may remove from office the superintendent of schools for a misdemeanor in office, incompetency or inattention to the duties of the office. Notice in writing of the charges against the accused and of the time and place of hearing and acting upon the charges shall be served upon the accused at least 5 days before the time of hearing and before any action is taken by the board on the charges. On demand, the accused or counsel for the accused shall be heard. Both the board and the accused may produce witnesses who shall be sworn by the board president and shall give testimony subject to the penalty for perjury.