| School | District | Grades | Population | Address - click for map | Phone |
| Barnwell Elementary School | Barnwell County School District 45 | 4-6 | 573 | 10524 Marlboro Avenue, Barnwell, SC 29812 | (803) 541–1285 |
| Barnwell High School | Barnwell County School District 45 | 9-12 | 754 | 474 Jackson Street, Barnwell, SC 29812 | (803) 541–1390 |
| Barnwell Primary School | Barnwell County School District 45 | PK | 871 | 734 Hagood Avenue, Barnwell, SC 29812 | (843) 341–1320 |
| Guinyard-butler Middle School | Barnwell County School District 45 | 7-8 | 423 | 779 Allen Street, Barnwell, SC 29812 | (803) 541–1370 |
| Lifegate Christian Academy | Private | 7-9 | 4 | Po Box 824, Barnwell, SC 29812 | (803) 541–9100 |
