Amends GS 115C-84.2(d) as title indicates. Requires Durham County Schools and Person County Public Schools to open no earlier 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. Also amends GS 115C-174.12 to allow Durham County Schools and Person County Public Schools to administer assessments before the end of the fall semester if it implements a school calendar that concludes the fall semester before December 31. Applies beginning with the 2023-24 school year.