Proceed to our Application Guideline to learn more about our application process.
For additional information, check out our National Competitions section and How-To section.
Hold your competition & apply for participation
The order is not important: you can apply first and hold the competition later or vice versa.
Choose the participation format and bring the team to the IEO!
be younger than 20 years old as of June 30th, 2026;
have your high-school graduation date later than December 1st, 2025.
Check if your country/territory is listed in the Participants section of our website. If it is, contact your national Coordinator for further information. If it is not, reach out to us via the Contact form naming your country/territory. It is possible that we have potential partners in your country/territory which haven’t been officially accepted yet.
Win your national competition
Up to 5 best students from each country/territory are invited to compete in the IEO.