S.C. Code § 59-71-470
State school bonds issued pursuant to this article may be in the form of negotiable coupon bonds, payable to bearer, with the privilege to the holder of having them registered in his name on the books of the State Treasurer as to principal only, or as to both principal and interest, and such principal, or both principal and interest, as the case may be, thus made payable to the registered holder, subject to such conditions as the State Treasurer may prescribe. State school bonds so registered as to principal in the name of the holder may thereafter be registered as payable to bearer and made payable accordingly.
State school bonds may also be issued as fully registered bonds with both principal and interest thereof made payable only to the registered holder. Such fully registered bonds shall be subject to transfer under such conditions as the State Treasurer may prescribe. Such fully registered bonds may, if the proceedings authorizing their issuance so provide, be convertible into negotiable coupon bonds with the attributes set forth in the first paragraph of this section.
S.C. Code § 59-71-470