Spartanburg Day School is a private 3K–12 school, located in unincorporated Spartanburg County, South Carolina, in the Greenville-Spartanburg area. It consists of a lower school for 3K-4th graders, a middle school for 5th–8th graders, and an upper school for 9th–12th graders. A pre-school program was added in 1967 for five-year olds, a readiness program in 1974 for four-year olds, and a 3K program in 2013 for three-year olds. The school is located directly across the street from Mary Black Memorial Hospital.