OSCA is entirely student-run, with all participating students working as cooks, buyers, administrators, and coordinators. Every member is required to do at least one hour per week of cleaning if they are able, encouraging accountability for the community and the space. Most decisions within OSCA are made by modified consensus. Oberlin bans all fraternities and sororities, making the co-ops the largest student-organized social system at the college. In addition to OSCA's four housing/dining and three dining-only cooperatives, Brown Bag Co-op is an OSCA-backed grocery that sells personal servings of food at bulk prices. OSCA also funds the Nicaragua Sister Partnership (NICSIS), a "sister cooperative" with Nicaragua's National Union of Farmers and Ranchers (UNAG). Outside of OSCA, other Oberlin co-ops include the Bike Co-op, Pottery Co-op, and SWAP: The Oberlin Book Co-op.