International science competition for students aged 15 and under, combining biology, chemistry, and physics in theory and experimental rounds.
Sourced from the official program page. Where a field says Not confirmed, we couldn't verify it — check the official site before applying.
- Location
- Rotates by host country
- Duration
- 1 week (December)
- Deadline
- National selection: spring
- Grades
- 9, 10
- Format
- in-person
- Cost
- Free
A general prep list — the official program page is always the source of truth. Your ticks are saved on this device only.
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How to think about programs like this.
This guidance is general and may not reflect this program's exact selection process. Always confirm details on the official program page before applying.
Atlas guidance is written from public information about programs in this category. It is not a promise about International Junior Science Olympiad (IJSO)'s actual selection process.