She is one of 24 students across the state to have won the prize.
Now in its 17th year, the prize encourages young Victorians to explore and reflect upon Australia's wartime history, and the sacrifice and service of veterans.
Cliona submitted an entry that reflected on the Australian experience of war, homecoming and the legacy of Anzac.
Kaitlyn Bulmer from Echuca College was also selected as a prize winner.
Member for Northern Victoria Mark Gepp congratulated the two students and their schools.
“They will come away from this experience with a rich understanding of Victoria’s war history and heritage,” Mr Gepp said.
“And a deep respect for service personnel who have served and sacrificed for our nation.”
While the winners would usually go on a study tour to Singapore and Vietnam, due to COVID-19 restrictions Cliona and Kaitlyn will instead be awarded scholarships of $3000 to support their future educational opportunities.
Finalists will receive a $1500 scholarship in place of a visit to Canberra and the Australian War Memorial.