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 require Johnston County Schools to open no later than August 10 (currently, prohibited from opening earlier than the Monday closest to August 26), excluding year-round schools. Deletes the provisions of subsection (d) concerning waiver of the opening date requirements upon a showing of good cause. Amends GS 115C-174.12 to allow the Johnston County Schools to administer assessments before the conclusion of the fall semester if it concludes the fall semester before December 31. Applies beginning with the 2023-24 school year.