S.C. Code § 59-107-180
Immediately following the issuance of state institution bonds, the State Treasurer shall segregate into a special fund all tuition fees of the state institution for which state institution bonds have been issued and shall apply such special fund to the payment of the principal, interest, and redemption premium, if any, on all bonds issued pursuant to this chapter for such institution; provided, however, that in the event the monies on deposit in such special fund at any time shall exceed all payments of principal and interest due in the then current fiscal year, plus the maximum annual debt service requirements in any succeeding fiscal year of all state institution bonds outstanding for such institution that were issued prior to March 1, 1991, plus any additional amount described in the last sentence of this section, the State Treasurer shall thereupon establish within the special fund created by this section separate funds for each issuance of state institution bonds for such state institution to be designated "special debt service and reserve funds", and (1) shall deposit in the special debt service and reserve fund for each issuance of state institution bonds that was issued prior to March 1, 1991, an amount equal to all payments of principal and interest due in the then current fiscal year on such issuance, plus the maximum annual debt service requirements in any succeeding fiscal year of such issuance, and (2) shall deposit in the special debt service and reserve fund for each issuance of such state institution bonds that was issued on or after March 1, 1991, an amount equal to all payments of principal and interest due on such issuance of state institution bonds in the then current fiscal year. Upon the establishment and funding of such special debt service and reserve funds for the state institution bonds for any state institution in accordance with the foregoing sentence, the State Treasurer shall apply tuition fees later received to maintain the levels of the special debt service and reserve funds at the level required by the foregoing sentence as such level may be adjusted as current annual and maximum annual requirements vary, and may apply any remaining tuition fees and any monies still remaining in the general special fund after the complete funding of the special debt service and reserve funds: to the defeasance of state institution bonds for such institution as provided in Section 59-107-200; or to any purpose set forth in subitems (a), (b), and (c) of the first paragraph of Section 59-107-40. In the event the surplus is to be applied to the defeasance of bonds, the computation of annual debt service requirements for purposes of this section shall be made as though the bonds to be defeased had already been defeased. Notwithstanding the foregoing, it is expressly provided that the State Treasurer may increase the required level for a special debt service and reserve fund for an issuance of state institution bonds issued on or after March 1, 1991, to an amount equal to all payments of principal and interest due on such issuance of state institution bonds in the then current fiscal year plus an amount equal to all payments of principal and interest due on such issuance of state institution bonds to become due between the end of the then current fiscal year and the date at which the State Treasurer anticipates receiving sufficient deposits of tuition fees from such state institution in the ensuing fiscal year to provide an adequate cash flow to meet debt service requirements for such ensuing fiscal year.
S.C. Code § 59-107-180