N.C. Gen. Stat. § 20-325

The Commissioner may cancel, suspend, revoke, or refuse to issue or renew a school or instructor's license in any case where he finds the licensee or applicant has not complied with, or has violated any of the provisions of this Article or any regulation adopted by the Commissioner hereunder. A suspended or revoked license shall be returned to the Commissioner by the licensee, and its holder shall not be eligible to apply for a license under this Article until 12 months have elapsed since the date of such suspension or revocation.