Under current law, GS 115C-84.2(d) sets the parameters within which local boards of education must determine the opening and closing dates of public schools under subdivision (a)(1) of this statute. Amends GS 115C-84.2(d) to provide the specified local boards of education with additional flexibility in adopting its school calendar, so long as the opening date for students is set no earlier than August 1, except for year-round schools. Limits application of this provision to the Duplin County Schools, Sampson County Schools, and Wayne County Schools. Applies beginning with the 2017-18 school year.