S.C. Code Ann. § 56-23-50

A license shall be denied any person failing to meet and maintain the minimum standards and conditions of operation established by the Department of Motor Vehicles pursuant to Section 56-23-60. The Department shall also have the right to revoke or suspend any license where the Department finds that the licensee has failed to maintain the required minimum standards or conditions of operation or conducts the school in any way inimical to the public interest or safety on the highways.