| Omcikus, Marijana |
Keira High School |
16050 |
| Omeros, Popi |
East Hills Girls Technology High School |
15220, 15390 |
| Omodei, Eva |
St Patrick's College |
15400 |
| On, Tony |
Trinity Catholic College (Auburn Campus) |
15250, 15370 |
| Ong, Albert Ta Yuen |
Sydney Secondary College, Blackwattle Bay Campus |
15250 |
| Ong, Anna |
Sydney Adventist College |
15140, 15240 |
| Ong, Cynthia Shing Chieh |
James Ruse Agricultural High School |
15010 |
| Ong, Daniel |
Hurlstone Agricultural High School Glenfield |
15250, 15340 |
| Ong, Ferdinand |
James Ruse Agricultural High School |
15030, 15050, 15140, 15250, 15260 |
| Ong, Fiona Sue Bao |
Fort Street High School Petersham |
15030, 15050, 15110, 15250, 15260 |
| Ong, Jennifer |
Strathfield Girls High School |
15240, 15250 |
| Ong, Jennifer Ai |
Sydney Secondary College, Blackwattle Bay Campus |
15250 |
| Ong, Julie May Lynn |
St Leo's Catholic College |
15180 |
| Ong, Lillian Beatrice |
Pymble Ladies' College |
15050, 15140, 15160, 15250, 15260, 15900, 15910, 25030 |
| Ong, Ming-Xiu |
Pymble Ladies' College |
15030, 15240 |
| Ong, Sui Yin |
Sydney Girls High School |
15210 |
| Onggo, Yana |
Oakhill College Castle Hill |
15030, 15240, 15250 |
| Onley, Adam James |
Bishop Druitt College |
15170 |
| Oo, Zin Wai Myat Thet |
Birrong Girls High School |
16995 |
| Ooi, Hui Ting |
INTI International College Penang |
15240, 15250 |
| Ooi, Jesslynn Stephanie |
Sydney Girls High School |
15250, 15300 |
| Ooi, Mian Li |
INTI International College Penang |
15050, 15240 |
| Ooi, Ying Lin |
INTI International College Penang |
15240 |
| Ooi, Zeng H |
North Sydney Boys High School |
15240, 15900 |
| Opacic, Lukas |
SHORE - Sydney Church of England Grammar School |
15240, 15250, 15280 |
| Opie, Steven |
The Scots School Albury |
15020 |
| Opoku, Gillean |
Liverpool Girls High School |
15400 |
| Oppy, Luke Simon |
Arndell Anglican College |
15200 |
| Opryshko, Andriy |
Trinity Catholic College (Auburn Campus) |
15240, 15370, 16130 |
| Or, Michelle Pui-Tung |
St George Girls High School Kogarah |
15250, 15260 |
| Or, Wing Yue Carmen |
Concord High School |
15040, 15110, 15150, 15250, 16150 |
| Orchard, Benjamin |
Maitland Grossmann High School |
15020 |
| Orchard, Craig Bradley |
Dubbo College, Senior Campus |
15200 |
| Orchard, Maddison Jean |
Southern Cross School |
15390 |
| Oreb, Tennille Lauren |
Loreto Normanhurst |
15020, 15140, 15160, 15240, 15250, 15270 |
| Orlando, Eliza |
William Branwhite Clarke College |
15400 |
| Ormerod, Rebecca May |
Warners Bay High School |
15020, 15270, 15290 |
| Ormond, Christopher Thomas |
Coffs Harbour Senior College |
15670 |
| Ormsby, Yvette |
SCEGGS Darlinghurst |
15020 |
| Ornelas, Jonathon |
Cecil Hills High School |
15230 |
| Orphin, Rochelle |
Holy Spirit College |
15370 |
| Orr, James |
Barker College |
15050, 15160, 15240, 15270, 15330 |
| Orth, Domonique Marie |
Cheltenham Girls' High School |
15320, 15400 |
| Orth, Kyle Nicholas |
Normanhurst Boys High School |
15210 |
| Ortiga, Julienne |
Mount St Benedict College |
15240 |
| Osborn, Maia Eliza |
Grafton High School |
15020, 15390, 16845 |
| Osborne, Charles |
Sydney Grammar School |
15140, 15160, 15400 |
| Osborne, Scott George |
Epping Boys High School |
15020, 15210, 15400 |
NSW Government