N.C. Gen. Stat. § 15A-173.5

In a judicial or administrative proceeding alleging negligence, a Certificate of Relief is a bar to any action alleging lack of due care in hiring, retaining, licensing, leasing to, admitting to a school or program, or otherwise transacting business or engaging in activity with the individual to whom the Certificate of Relief was issued, if the person against whom the judicial or administrative proceeding is brought relied on the Certificate of Relief at the time of the alleged negligence.