List of Schools In South Dakota
| School Name | City | Grades |
|---|---|---|
| O M TIFFANY ELEMENTARY SCHOOL 819 8TH AVE NE | ABERDEEN | KG-5 |
| O'KREEK ELEMENTARY SCHOOL 44 SCHOOL ST | O'KREEK | KG-8 |
| OAKLANE COLONY SCHOOL 26730 423RD AVE | ALEXANDRIA | KG-8 |
| OELRICHS ELEMENTARY SCHOOL 625 WALNUT | OELRICHS | KG-6 |
| OELRICHS HIGH SCHOOL 625 WALNUT | OELRICHS | 9-12 |
| OELRICHS JR HIGH SCHOOL 625 WALNUT | OELRICHS | 7-8 |
| OLD ELM SPRING COLONY SCHOOL 42021 268TH ST | PARKSTON | KG-8 |
| OLDHAM-RAMONA ELEMENTARY SCHOOL 220 WEST 2ND ST | RAMONA | PK-6 |
| OLDHAM-RAMONA HIGH SCHOOL 220 WEST 2ND ST | RAMONA | 9-12 |
| OLDHAM-RAMONA JR HIGH SCHOOL 220 WEST 2ND ST | RAMONA | 7-8 |
| ONIDA ELEMENTARY SCHOOL 500 8TH ST | ONIDA | PK-6 |
| OPAL ELEMENTARY SCHOOL 18010 OPAL RD | OPAL | KG-8 |
| ORLAND COLONY SCHOOL 309 SOUTH CHURCH AVE | MONTROSE | KG-8 |
| ORTON ELEMENTARY SCHOOL 18442 MISSION RIDGE RD | FORT PIERRE | 2-8 |
| OSCAR HOWE ELEMENTARY SCHOOL 2801 VALLEY VIEW RD | SIOUX FALLS | KG-5 |
| OUR HOME ASAP SCHOOL 40354 210TH ST | HURON | 5-12 |
| OUR HOME REDISCOVERY - 77 SCHOOL 40354210TH ST | HURON | 5-12 |
| OUR HOME SCHOOL 102A SOUTH CHAPMAN DR | PARKSTON | 6-12 |