OzCLO 2025
OzCLO 2025 is now complete. The first round was held online on Wednesday, 5 March 2025. The competition is held at the same time across Australia – the specific times for each state time zone are listed in the table below.
| State | Preparation Time | Competition Time |
|---|---|---|
| ACT | 1:30 – 2:30pm | 2:30 – 4:30pm |
| NSW | 1:30 – 2:30pm | 2:30 – 4:30pm |
| NT | 12:00 – 1:00pm | 1:00 – 3:00pm |
| QLD | 12:30 – 1:30pm | 1:30 – 3:30pm |
| SA | 1:00 – 2:00pm | 2:00 – 4:00pm |
| VIC | 1:30 – 2:30pm | 2:30 – 4:30pm |
| WA | 10:30 – 11:30am | 11:30am – 1:30pm |
The second round, for the top-scoring teams from the first round, was held offline on Wednesday, 26 March 2025.
Best of luck to our selected teams who will compete at the International Linguistics Olympiad (IOL) in Taipei!
Format
The first round is a two-hour contest. Students compete in teams of four. Each team enters their team’s solutions on one computer.
Teachers are given access to a pdf copy of the problem set an hour before the competition begins for students, and should give each student a printed copy to work on.
For further information on the format of the competition, please check our FAQ page below.
Visit FAQ