Details for Hong Kong Primary Schools Olympiad in Informatics (HKPSOI) 2025/26 has been published. The Heat Event will be held from 8th December (Monday) to 19th December 2025 (Friday) and the Final Event will be held on 28th February 2026 (Saturday).
We welcome all primary schools to participate in the competition. Application deadline is 24th November 2025 (Monday).
We are now accepting applications for Hong Kong Olympiad in Informatics 2025/26.
Heat Event: 8th November, 2025 (Saturday)
Final Event: 6th December, 2025 (Saturday)
Each secondary school may nominate up to 16 students. Application deadline is 28th October, 2025 (Tuesday). Nominations will be accepted on a first-come-first-serve basis.
For details, please visit https://hkoi.org/en/hkoi/.
We are now accepting applications for Hong Kong Girls’ Olympiad in Informatics 2025/26.
Main Event: 23rd November, 2025 (Sunday)
Each secondary school may nominate up to 6 female students. Application deadline is 28th October, 2025 (Tuesday). Nominations will be accepted on a first-come-first-serve basis.
For details, please visit https://hkoi.org/en/hkgoi/
As a tropical cyclone is approaching Hong Kong. We urge all participants to familiarize themselves with the updated Inclement Weather Arrangement.
Our contingency plan has been confirmed with the China Computer Federation. The rules are as follows:
If EDB announces the suspension of AM schools: SDIC Junior Group / CSP-J1 will be postponed to 27th September 2025 (Saturday).
If EDB announces the suspension of PM schools: SDIC Senior Group / CSP-S1 will be postponed to 27th September 2025 (Saturday).
If it becomes necessary, any make-up test(s) will use a different question paper. Consequently, the results will be used solely to determine advancement to the next round. Participants will not be eligible for awards or certificates for this round.
Please monitor our website frequently for latest updates.
Hong Kong Secondary Schools Software Development Invitational Contest (SDIC) 2025 Heat Event will be held on 20th September, 2025 (Saturday).
The application deadline is 3rd September, 2025 (Wednesday).
The Hong Kong Olympiad in Informatics Training Team is pleased to announce that the team has achieved marvelous results in various external competitions this year. (See details)
| IOI 2025 | Sucre, Bolivia | 27 July – 3 August 2025 | 2 Silver, 2 Bronze |
|---|---|---|---|
| NOI 2025 | Shaoxing, Zhejiang | 12-18 July 2025 | 1 Silver, 5 Bronze |
| EGOI 2025 | Bonn, Germany | 14-20 July 2025 | 2 Bronze, 1 Honourable Mention |
| APIO 2025 | Uzbekistan | 17 May 2025 | 4 Silver, 2 Bronze |
The current subscriptions will expire on 2025-09-30. We are now accepting renewal and new subscriptions.
If you are interested in the subscription, please visit the Online Judge page for more information and guides.