Bands
| Title | City | Information | Category |
|---|---|---|---|
| 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 | ||
| Kelly Miller Elementary | Winnsboro | Elementary School | |
| Kennedy Middle School | Aiken | 274 E Pine Log Rd, Aiken, SC 29803 (803) 641-2405 | Middle School |