In addition to the distribution required by law, copies of the official minutes of each meeting of the board shall be distributed to such persons as the board may direct and to such private citizens as may make a formal written request. An official copy of all board minutes shall remain on file in the board office, available to any citizen desiring to examine them. The board may elect to make recordings of the board meetings and shall maintain such recordings in accordance with the approved State of Texas Records Retention Schedule.