S.C. Code Ann. § 59-1-442

(A) The governing body of a school board or school district may adopt a policy that permits either (1) the captains of athletic teams at a high school or their student designees; or (2) a student designated by the members of that team to deliver a brief opening or closing message, or both, of two minutes or less, at school-sponsored athletic events. (B) If team captains, their student designees, or the student designees of athletic teams deliver a brief opening or closing message, or both, of two minutes or less, the content of that message must be prepared or selected by the student and may not be recommended, monitored, reviewed, or censored by a member of the governing body of the school district, its officers, or employees. No student may be disciplined or reprimanded by the school for the content of any nonobscene, nonprofane, or nonvulgar message delivered pursuant to this section.