Bands
| Title | City | Information | Category |
|---|---|---|---|
| JL Mann | Greenville | High School | |
| John Ford Middle School | Middle School | ||
| John’s Island High School | Charleston | High School | |
| Johnsonville High School | High School | ||
| Johnston-Edgefield-Trenton Middle School | Middle School | ||
| Jonakin Middle School | Middle School | ||
| Jonesville High School | High School | ||
| Jonesville Middle School | Jonesville, SC | Middle School | |
| Keenan High School | High School | ||
| Kelly Mill Middle School | Middle School |