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 local boards of education for the Chatham County Schools with additional flexibility in adopting their school calendars.  Provides that regardless of the opening date, first semester exams may be given before winter break. Applies beginning with the 2019-20 school year.