S.C. Code Ann. § 9-20-20
There is established an optional retirement program for public school (kindergarten through grade twelve) teachers, specialists, coordinators, and administrators. An employee is not eligible to participate in the optional retirement program unless the employee is eligible for membership in the South Carolina Retirement System. The following retirement and death benefit payment options may be provided for a participant in the optional retirement program: annuities, lump-sum distributions, partial distributions, or periodic withdrawals, whether through individual annuity contracts or individual certificates issued for group annuity contracts, fixed or variable in nature, or a combination of them, which must be issued to, and become the property of, the participant, or through mutual fund companies, or through state or national banking institutions. The employer and the participant shall contribute toward the purchase of the contract or investment under this program. The contribution made by the employer must be derived, in whole or in part, from the funds appropriated annually by the General Assembly as Aid to School Districts--Employer Contributions in the Department of Education appropriation in the annual general appropriations act. In accordance with the definition provided in Section 9-20-10(2), the State Department of Education annually shall provide to the South Carolina Retirement System a listing of positions that qualify an employee for the optional retirement program.