N.C. Gen. Stat. § 115C-218.65

A charter school shall ensure that the report card issued for it by the State Board of Education receives wide distribution to the local press or is otherwise provided to the public. A charter school shall ensure that the overall school performance score and grade earned by the charter school for the current and previous four school years is prominently displayed on the school website. If a charter school earned an overall school performance grade of D or F, the charter school shall provide notice of the grade in writing to the parent or guardian of all students enrolled in that school.