(a) The board by rule may provide for the election of some or all of the directors from single-member districts.
(b) In addition to the qualifications required by Section 7209.052, if the board provides for the election of some or all of the directors from single-member districts, to be eligible to be listed on the ballot as a candidate for or to serve as a director from a single-member district, a person must be a resident of that district.