HKOI 2023/24

This year, the Heat Event will be held on 11th November 2023 (Saturday) and the Final Event will be held on 16th December 2023 (Saturday).

In the competition, contestants are divided into two groups, namely the Junior Group and the Senior Group, depending on their age. In the Heat Event, contestants will have to complete a written paper of 90 minutes’ duration. In the Final Event, they will take a practical test in which they have to write programs to solve the given problems.

Individual prizes are awarded in Gold, Silver and Bronze medals, Honourable Mentions, as well as the Best Young Contestant and the Best First-Time Contestant. Grand School Prizes are awarded to the four schools with the highest points. Medalists will be invited to join the HKOI Training Team for intensive training. They will also be eligible to participate in the Team Formation Tests in which delegations are selected to represent Hong Kong in international/national/regional competitions.

Please note the following:
1. The updated Competition Syllabus will be effective from HKOI 2023/24.
2. In HKOI 2023/24 Junior Group Heat Event, the 5 true/false questions that appeared in previous years will be replaced by multiple-choice questions.


HKOI only accepts nominations through schools. Please contact your school’s ICT subject master or teacher-in-charge to apply. Please read the rules before applying.

For HKOI Online Judge School Admins: Complete the school-linked nomination form
Advantages: No need to enter school and contact information. Schools with a paid subscription can also add students by their Online Judge username.

For other teachers: Complete the basic nomination form

Application Deadline: 31st October, 2023 (Tuesday) 23:59:59.

The tentative list of accepted schools will be posted on 3rd November, 2023 (Friday).

This year, the total quota is 420 students per age group. Nominations will be accepted on a first-come-first-serve basis*. Schools are strongly encouraged to submit their nomination forms early. For reference, HKOI 2022/23 received 413 Junior Group nominations.

*According to the submission time provided that the form with signatures and school chop has been uploaded. If the form is amended after submission, additions, replacements and students with changed group will have their queue position reset to the end.

Nomination Results

Number of nominated students
Senior Group: 313
Junior Group: 367

Aberdeen Baptist Lui Ming Choi College
Baptist Lui Ming Choi Secondary School
Bishop Hall Jubilee School
Buddhist Sin Tak College
Carmel Divine Grace Foundation Secondary School
Carmel Holy Word Secondary School
Carmel Pak U Secondary School
Carmel Secondary School
CCC Heep Woh College
CCC Mong Man Wai College
Chan Sui Ki (La Salle) College
Chinese International School
Chiu Lut Sau Memorial Secondary School
Christian & Missionary Alliance Sun Kei Secondary School
Cognitio College (Hong Kong)
Diocesan Boys’ School
Diocesan Girls’ School
Discovery College
ELCHK Lutheran Secondary School
Elegantia College (Sponsored by Education Convergence)
Evangel College
French International School of Hong Kong
Fukien Secondary School
G.T. (Ellen Yeung) College
German Swiss International School
Harrow International School Hong Kong
Heep Yunn School
Henrietta Secondary School
Heung To Middle School
Heung To Secondary School (Tseung Kwan O)
HKBUAS Wong Kam Fai Secondary and Primary School
HKTA Tang Hin Memorial Secondary School
HKUGA College
Hoi Ping Chamber of Commerce Secondary School
Hong Kong International School
Island School
Kau Yan College
Kiangsu-Chekiang College
Kiangsu-Chekiang College (Shatin)
King George V School
King Ling college
King’s College
Kwun Tong Government Secondary School
Kwun Tong Maryknoll College
La Salle College
Lai King Catholic Secondary School
Li Po Chun United World College
Lui Cheung Kwong Lutheran College
Munsang College (Hong Kong Island)
N.T. Heung Yee Kuk Yuen Long District Secondary School
Po Leung Kuk Celine Ho Yam Tong College
Po Leung Kuk Centenary Li Shiu Chung Memorial College
Po Leung Kuk Laws Foundation College
Po Leung Kuk No.1 W.H. Cheung College
Po Leung Kuk Tang Yuk Tien College
Po Leung Kuk Wu Chung College
Pui Ching Middle School
Pui Kiu College
QESOSA Tong Kwok Wah Secondary School
Sha Tin College
Sha Tin Methodist College
Shatin Tsung Tsin Secondary School
Sing Yin Secondary School
SKH Bishop Baker Secondary School
SKH Chan Young Secondary School
SKH Lam Kau Mow Secondary School
SKH Lam Woo Memorial Secondary School
SKH Lui Ming Choi Secondary School
SKH Tang Shiu Kin Secondary School
South Tuen Mun Government Secondary School
St. Joseph’s College
St. Mark’s School
St. Paul’s Co-educational College
St. Paul’s College
St. Paul’s Convent School
St. Stephen’s College
STFA Leung Kau Kui College
STFA Seaward Woo College
STFA Tam Pak Yu College
STFA Yung Yau College
The Independent Schools Foundation Academy
The Mission Covenant Church Holm Glad College
Tseung Kwan O Government Secondary School
Tsuen Wan Government Secondary School
Tuen Mun Catholic Secondary School
Tung Chung Catholic School
TWGHs C.Y.Ma Memorial College
TWGHs Kap Yan Directors’ College
TWGHs Lo Kon Ting Memorial College
TWGHs Wong Fut Nam College
Victoria Shanghai Academy
Wah Yan College, Hong Kong
Wah Yan College, Kowloon
West Island School
Wong Shiu Chi Secondary School
Yan Oi Tong Tin Ka Ping Secondary School
Ying Wa College
Ying Wa Girls’ School
Yuen Long Merchants Association Secondary School