S.C. Code Ann. § 59-25-820

The State Board of Education, upon its own initiative, in the accomplishment of justice in the matter, may require all teachers in the district from which the appeal came to be examined and recertified under the procedure then in force for the certification of teachers as to their qualifications and shall thereupon require the trustees of such district to classify such teachers in accordance with such recertification for the purpose of fixing their salaries, to the end that the salaries of such teachers shall be based upon the value of services rendered.