Is International Olympiad in Informatics free?

Costs vary: students reach it through their national selection, and travel or team costs depend on the country.

How can my child prepare for International Olympiad in Informatics?

The key skills are algorithms, data structures, C++. CodingChamp courses that build them: C++ & Competitive Programming. Regular practice on real projects matters more than last-minute cramming.

Olympiad · 2027

International Olympiad in Informatics (IOI)

The world's top programming olympiad for high-school students. Countries send their best four, selected through national olympiads such as INOI, USACO and BIO.

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Key dates

IOI 2027, Potsdam (Germany)12 Sept – 19 Sept 2027

Last edition: IOI 2026, Tashkent (Uzbekistan), 9 Aug – 16 Aug 2026.

Who can take part

Secondary school students. National teams of up to 4, chosen through each country's olympiad.

Skills it needs, and how to prepare

Key skills: Algorithms, data structures, C++.

C++ & Competitive Programming course →

Questions parents ask

IOI 2027, Potsdam (Germany): 12 Sept – 19 Sept 2027. It usually runs every summer (July–September). Always confirm on the official site.

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Details were checked on the official site in October 2026. Please confirm dates and rules with IOI before entering. CodingChamp is not affiliated with this event.

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