List of Schools In Wisconsin
| School Name | City | Grades |
|---|---|---|
| O BROWN ELEMENTARY SCHOOL 5915 ERIE ST | RACINE | PK-5 |
| O'KEEFFE MIDDLE SCHOOL 510 SOUTH THORNTON AVE | MADISON | 6-8 |
| OAK CREEK EAST MIDDLE SCHOOL 9330 SOUTH SHEPARD AVE | OAK CREEK | 6-8 |
| OAK CREEK HIGH SCHOOL 340 EAST PUETZ RD | OAK CREEK | 9-12 |
| OAK CREEK WEST MIDDLE SCHOOL 8401 SOUTH 13TH ST | OAK CREEK | 6-8 |
| OAK GROVE ELEMENTARY SCHOOL W7908 CTH Z | ONALASKA | PK |
| OAKDALE ELEMENTARY SCHOOL 217 SOUTH OAKWOOD ST | OAKDALE | PK-2 |
| OAKFIELD HIGH SCHOOL 250 CHURCH ST | OAKFIELD | 7-12 |
| OAKFIELD MIDDLE SCHOOL 200 WHITE ST | OAKFIELD | 6-8 |
| OAKHILL CORRECTIONAL INSTITUTE SCHOOL 5212 HWY M | OREGON | 12 |
| OAKLAWN ELEMENTARY SCHOOL 500 21ST ST SOUTH | MENOMONIE | PK-5 |
| OAKLAWN ELEMENTARY SCHOOL 112 VIOLA AVE | OSHKOSH | PK-5 |
| OCONOMOWOC HIGH SCHOOL 641 EAST FOREST ST | OCONOMOWOC | 9-12 |
| OCONOMOWOC MIDDLE SCHOOL 555 OCONOMOWOC PARKWAY | OCONOMOWOC | 5-8 |
| OCONTO ELEMENTARY SCHOOL 810 SCHERER AVE | OCONTO | PK-4 |
| OCONTO FALLS ELEMENTARY SCHOOL 415 EAST MARIA VOLK DR | OCONTO FALLS | PK-5 |
| OCONTO FALLS HIGH SCHOOL 210 NORTH FARM RD | OCONTO FALLS | 9-12 |
| OCONTO HIGH SCHOOL 1717 SUPERIOR AVE | OCONTO | 9-12 |
| OCONTO LITERACY CHARTER SCHOOL 810 SCHERER AVE | OCONTO | PK-2 |
| OCONTO MIDDLE SCHOOL 400 MICHIGAN AVE | OCONTO | 5-8 |
| ODYSSEY-MAGELLAN SCHOOL 2037 NORTH ELINOR ST | APPLETON | 3-8 |
| OGEMA ELEMENTARY SCHOOL N1844 SCHOOLHOUSE RD | OGEMA | PK-4 |
| OLSON ELEMENTARY SCHOOL 801 REDAN DR | VERONA | PK-5 |
| OLSON MIDDLE SCHOOL 508 GRAYSIDE AVE | MAUSTON | 6-8 |
| OMRO ELEMENTARY SCHOOL 1000 NORTH WEBSTER AVE | OMRO | 2-5 |
| OMRO HIGH SCHOOL 455 FOX TRL | OMRO | 9-12 |
| OMRO MIDDLE SCHOOL 455 FOX TRL | OMRO | 6-8 |
| ONALASKA HIGH SCHOOL 700 HILLTOPPER PLACE | ONALASKA | 9-12 |
| ONALASKA KINDERGARTEN CENTER SCHOOL 200 EAGLE BLUFF COURT | ONALASKA | PK-KG |
| ONALASKA MIDDLE SCHOOL 711 QUINCY ST | ONALASKA | 6-8 |
| OOSTBURG ELEMENTARY SCHOOL 203 NORTH SEVENTH ST | OOSTBURG | PK-5 |
| OOSTBURG HIGH SCHOOL 410 NEW YORK AVE | OOSTBURG | 9-12 |
| OOSTBURG MIDDLE SCHOOL 408 NEW YORK AVE | OOSTBURG | 6-8 |
| ORCHARD LANE ELEMENTARY SCHOOL 2015 SOUTH SUNNYSLOPE RD | NEW BERLIN | PK-6 |
| ORCHARD RIDGE ELEMENTARY SCHOOL 5602 RUSSETT RD | MADISON | PK-5 |
| OREGON HIGH SCHOOL 456 NORTH PERRY PARKWAY | OREGON | 9-12 |
| OREGON MIDDLE SCHOOL 601 PLEASANT OAK DR | OREGON | 7-8 |
| ORFORDVILLE ELEMENTARY SCHOOL 408 WEST BELOIT ST | ORFORDVILLE | 3-6 |
| ORIOLE LANE ELEMENTARY SCHOOL 12850 NORTH ORIOLE LN | MEQUON | KG-5 |
| OSCEOLA CHARTER PRESCHOOL 250 10TH AVE EAST | OSCEOLA | PK |
| OSCEOLA ELEMENTARY SCHOOL 250 10TH AVE EAST | OSCEOLA | PK-2 |
| OSCEOLA HIGH SCHOOL 1111 OAK RIDGE DR | OSCEOLA | 9-12 |
| OSCEOLA INTERMEDIATE SCHOOL 949 EDUCATION AVE | OSCEOLA | 3-5 |
| OSCEOLA MIDDLE SCHOOL 1029 OAK RIDGE DR | OSCEOLA | 6-8 |
| OSHKOSH CORRECTIONAL INSTITUTE SCHOOL 1730 SNELL RD | OSHKOSH | 12 |
| OSSEO ELEMENTARY SCHOOL 13025 15TH ST | OSSEO | PK-5 |
| OSSEO MIDDLE SCHOOL 50900 FRANCIS ST | OSSEO | 6-8 |
| OSSEO-FAIRCHILD HIGH SCHOOL 50900 FRANCIS ST | OSSEO | 9-12 |
| OWEN-WITHEE ELEMENTARY SCHOOL 832 WEST 3RD ST | OWEN | PK-6 |
| OWEN-WITHEE HIGH SCHOOL 832 WEST 3RD ST | OWEN | 9-12 |
| OWEN-WITHEE JUNIOR HIGH SCHOOL 832 WEST 3RD ST | OWEN | 7-8 |
| OXFORD AVENUE SCHOOL 728 OXFORD AVE | EAU CLAIRE | 10-12 |
| OXFORD ELEMENTARY SCHOOL 222 SOUTH FRANKLIN AVE | OXFORD | PK-6 |
| OZAUKEE ELEMENTARY SCHOOL 401 HIGHLAND DR | FREDONIA | PK-4 |
| OZAUKEE HIGH SCHOOL 401 HIGHLAND DR | FREDONIA | 9-12 |
| OZAUKEE MIDDLE SCHOOL 401 HIGHLAND DR | FREDONIA | 5-8 |