| Lafayette Christian School | Lagrange | Private school | PK–12 | 0 |
| Lagrange Academy | Lagrange | Private school | PK–12 | 0 |
| Lake Grace Christian School | Jesup | Private school | 2–12 | 0 |
| Landmark Christian School | Fairburn | Private school | PK–12 | 0 |
| Landmark Christian School, Inc. | Fairburn | Private school | PK–12 | 0 |
| Lanier Christian Academy | Flowery Branch | Private school | K–12 | 0 |
| Laurel Heights Academy (hospital) | Atlanta | Private school | 1–12 | 0 |
| Learning Tree Elementary School | Dalton | Private school | PK–8 | 0 |
| Liberty Faith Christian Academy | Moultrie | Private school | 2–12 | 0 |
| Lighthouse Christian Academy | Dawsonville | Private school | PK–12 | 0 |
| Lighthouse Christian School | Valdosta | Private school | PK–12 | 0 |
| Lithonia Adventist Academy Elementary | Stonecrest | Private school | PK–8 | 0 |
| Living Way Christian Academy | Adairsville | Private school | PK–12 | 0 |
| Living Word Academy | Bogart | Private school | K–8 | 0 |
| Lyndon Academy | Woodstock | Private school | PK–12 | 0 |
| Mableton Christian Academy | Mableton | Private school | 1–12 | 0 |
| Majestic Preparatory Academy Inc | Lawrenceville | Private school | PK–9 | 0 |
| Maranatha Christian Academy | Oakwood | Private school | PK–12 | 0 |
| Marist School | Atlanta | Private school | PK–12 | 0 |
| McDonough Methodist Academy | McDonough | Private school | PK–5 | 0 |
| McGinnis Woods Country Day School | Alpharetta | Private school | PK–8 | 0 |
| Mde School Of East Cobb | Marietta | Private school | K–11 | 0 |
| Medlock Bridge Montessori | Johns Creek | Private school | PK–K | 0 |
| Meigs Mennonite Christian School | Meigs | Private school | 1–11 | 0 |
| Messiah Christain Academy | Canton | Private school | PK–K | 0 |
| Metropolitan Christian School | Atlanta | Private school | 7–12 | 0 |
| Midtown International School | Atlanta | Private school | K–12 | 0 |
| Midway Covenant Christian School | Powder Springs | Private school | PK–8 | 0 |
| Mill Springs Academy | Alpharetta | Private school | K–12 | 0 |
| Milledgeville Christian Academy | Gordon | Private school | K–9 | 0 |
| Miller's Military Academy | Lithonia | Private school | 5–12 | 0 |
| Milton Montessori School At Kelly Mill | Cumming | Private school | 1–3 | 0 |
| Mohammed Schools Of Atlanta | Atlanta | Private school | PK–12 | 0 |
| Monroe Country Day School | Monroe | Private school | PK–11 | 0 |
| Monsignor Donovan Catholic High School | Athens | Private school | 9–12 | 0 |
| Montessori Academy At Sharon Springs | Cumming | Private school | PK–6 | 0 |
| Montessori At Brookstone School | Acworth | Private school | PK–K | 0 |
| Montessori At Vickery | Cumming | Private school | PK–3 | 0 |
| Montessori In Town | Atlanta | Private school | PK–6 | 0 |
| Montessori Joy Learning Center | Reynolds | Private school | PK–K | 0 |
| Montessori Of Macon | Macon | Private school | PK–8 | 0 |
| Montessori School Of Rome | Rome | Private school | PK–12 | 0 |
| Montessori School Of Woodstock | Marietta | Private school | PK–K | 0 |
| Montezuma Mennonite School | Montezuma | Private school | 1–8 | 0 |
| Morah Carols Place | Atlanta | Private school | PK–1 | 0 |
| Mount De Sales Academy | Macon | Private school | 6–12 | 0 |
| Mount Olive Early Learning Center | East Point | Private school | K | 0 |
| Mountain Area Christian Academy | Morganton | Private school | K–11 | 0 |
| Mt. Bethel Christian Academy | Marietta | Private school | K–12 | 0 |
| Mt Bethel Christian Academy | Marietta | Private school | K–12 | 0 |