List of Schools In Maine
| School Name | City | Grades |
|---|---|---|
| OAK HILL HIGH SCHOOL 10 NO LOCATION AVAILABLE | SABATTUS | 9-12 |
| OLD ORCHARD BEACH HIGH SCHOOL 40 EAST EMERSON CUMMINGS BLVD | OLD ORCHARD BEACH | 9-12 |
| OLD TOWN ELEMENTARY SCHOOL 576 STILLWATER AVE | OLD TOWN | PK-5 |
| OLD TOWN HIGH SCHOOL 203 STILLWATER AVE | OLD TOWN | 9-12 |
| OPAL MYRICK ELEMENTARY SCHOOL 6 1/2 BEECH ST | EAST MILLINOCKET | KG-4 |
| ORLAND CONSOLIDATED SCHOOL 21 SCHOOLHOUSE RD | ORLAND | PK-8 |
| ORONO HIGH SCHOOL 14 GOODRIDGE DR | ORONO | 9-12 |
| ORONO MIDDLE SCHOOL 14 GOODRIDGE DR | ORONO | 6-8 |
| OTISFIELD COMMUNITY SCHOOL 416 POWHATTAN RD | OTISFIELD | KG-6 |
| OWLS HEAD CENTRAL SCHOOL 54 ASH POINT DR | OWLS HEAD | 3-5 |
| OXFORD ELEMENTARY SCHOOL 79 PLEASANT ST | OXFORD | KG-6 |
| OXFORD HILLS COMPREHENSIVE HIGH SCHOOL 256 MAIN ST | SOUTH PARIS | 9-12 |
| OXFORD HILLS MIDDLE SCHOOL 100 PINE ST | SOUTH PARIS | 7-8 |
| OXFORD HILLS TECHNOLOGY - REGION 11 SCHOOL 256 MAIN ST | NORWAY | 11-12 |
| OXFORD-CUMBERLAND CANAL SCHOOL 102 GLENWOOD AVE | WESTBROOK | 3-5 |