| Ogunbona, Rene Oluwatomi |
Smith's Hill High School |
15040, 15110 |
| Oh, Andrew Doo Yong |
Cherrybrook Technology High School |
15250, 15260, 15830 |
| Oh, Jane |
Hornsby Girls High School |
15110, 15140, 15250 |
| Oh, Jin-Ho (David) |
Marist College North Shore |
15050, 15250, 15260, 15330 |
| Oh, Juliana |
Brigidine College Randwick |
15250 |
| Oh, Yea-Nim |
The Jannali High School |
15020 |
| Oh, Yoo Jin |
Sydney International High School |
15820 |
| Ohnuki, Conrad |
Trinity Catholic College Lismore - St Mary's Campus |
15160, 15170 |
| Olding, Rachel Anneke |
Abbotsleigh |
15110, 15140, 15160, 15190, 15240, 15270, 15280 |
| Olevson, Daniel |
Masada College |
15180, 15230 |
| Oliveira-Woolmer, Pedro |
Wollongong High School of the Performing Arts |
15240, 15300, 15310 |
| Oliver, Jonathon Lee |
Avondale School |
15210 |
| Olivier, Eliot Lee |
Gosford High School |
15250, 15330 |
| Olley, Christopher Martin |
Karabar High School |
15250 |
| Ollivier, Rachel Louise |
St Marys Senior High School |
15350 |
| Olmos, Yvonne |
MLC Burwood |
15230, 15340 |
| Olsen, Melanie Ann |
South Western Sydney Institute - Bankstown Campus |
15230 |
| Omagari, Emmy Katherine |
Burwood Girls High School |
15140, 15160 |
| Omar, Abdigibar |
Homebush Boys High School |
15030, 15050, 15250 |
| Omar Ismail, Holya |
Noor Al Houda Islamic College |
15240, 15250 |
| Ong, Andrew |
Sydney Secondary College, Leichhardt Campus |
15240 |
| Ong, Daniel |
Sydney Grammar School |
15050, 15140, 15250, 15260, 15300, 15310, 15330 |
| Ong, Josephine Ping-Ying |
Meriden School |
15300, 15310 |
| Ong, Myka |
Catherine McAuley Westmead |
15140, 15170, 15270, 15350 |
| Ong, Susan Soo Zhen |
Turramurra High School |
15140, 15310 |
| Ong, Teck Lim |
St Joseph's College |
15240, 15250 |
| Onggo, Catelia |
Ascham School |
15030 |
| Ongley, Sarah |
Mitchell High School Blacktown |
15030 |
| Onley, Jessica Ann |
Western Institute - Orange Campus |
15340 |
| Onley, Leah Anita |
Great Lakes College, Tuncurry Senior Campus |
15230, 15340 |
| Oo, Myat Khine |
Sefton High School |
15210, 15240 |
| Ooi, Christine Yew Ann |
Abbotsleigh |
15040, 15160, 15190 |
| Ooi, Evarn |
Northern Beaches Secondary College, Balgowlah Boys Campus |
15020 |
| Ooi, Jun Yi |
INTI International College Penang |
15030, 15050, 15150, 15240, 15250 |
| Oon, Jush'n |
INTI International College Penang |
15240 |
| Oosterhoff, Guy |
Korowal School |
15240, 15250, 15330 |
| Opacic, Lukas |
SHORE - Sydney Church of England Grammar School |
15300, 15310 |
| Opdam, Daniel William |
North Sydney Boys High School |
15240, 15280 |
| Oppenheimer, Joe Walton |
The Armidale School |
15250, 15260 |
| Oraham, Ramsen |
Canley Vale High School |
15040 |
| Oreb, Nicole Renee |
Loreto Normanhurst |
15110, 15140, 15160, 15240, 15250, 15900 |
| Oreo, Kevin |
Taree High School |
15250 |
| Orfanos, Elli |
East Hills Girls Technology High School |
15020 |
| Orford, Emma Kathleen |
Port Hacking High School |
15320, 15390 |
| Orford, Samantha Jane |
Cowra High School |
15320 |
NSW Government