(a) The designation of the positions of trustees by number is or may be required only as specified by this section.
(b) The positions on the board of trustees shall be designated by number in any independent school district in which the procedure of designating and electing the trustees by number has been authorized and instituted whether under general or special law and whether by resolution of the trustees or by operation of law.

(c) The positions on the board of trustees shall be designated by number in any independent school district in which the board of trustees by resolution orders that all candidates for trustee be voted on and elected separately for positions on the board of trustees and that all candidates be designated on the official ballot according to the number of the positions for which they seek election.
(d) The resolution of the board of trustees must be made not later than the 60th day before the date of any trustee election for this section to apply.
(e) The board shall also, not later than the 60th day before the date of the election, number the positions on the board in the order in which the terms of office of the trustees expire.
(f) Once the board of trustees of an independent school district has ordered the election of trustees by numbered positions under this section, neither the board of trustees nor their successors may rescind the action.
(g) Ballots for an election to which this section applies must clearly show the position for which each person is a candidate. The board of trustees shall arrange by lot the names of the candidates for each position.