S.C. Code Ann. § 59-25-20: Qualifications of teachers.

No board of school trustees shall hereafter employ any teacher who has not a certificate to teach in the free public schools of the State. This provision, however, shall not affect the employment of any teacher now teaching in any of the schools of the special school districts. The trustees of any such school may also impose any additional examinations and qualifications they may deem proper before or after employing any teacher.