An annual international Earth science olympiad for secondary school students, where the winners of each country's national competition are invited to compete in national delegations. It covers geology, geophysics, meteorology, oceanography, astronomy and environmental science. Each participant takes theoretical and practical exams plus a field work test, and students from different countries are also graded together as a group in the International Team Field Investigation.
Offered by IESO. Competition for high school students in Worldwide. Format: In-person. Cost: Free. Grades 9–12. Deadline: rolling or not yet announced.
Fields: Environment
Info checked October 2026.
No date is posted for the 2026-27 cycle yet. Check the official page for when applications open.
Yes. International Earth Science Olympiad is free to take part in.
High school students in grades 9 to 12. It takes place in person in Worldwide. Age, residency and citizenship rules are on the official page.
More academic competitions for high school students