International Junior Science Olympiad (IJSO)

The International Junior Science Olympiad (IJSO) is an annual international competition in the Natural Sciences for school students under the age of 16. It assesses students across Physics, Chemistry and Biology through theoretical and practical tasks. IJSO aims to stimulate interest in science, develop problem-solving and critical-thinking skills, and encourage experimentation and scientific inquiry.

Prestigious international achievement in Natural Sciences. Opportunity to represent your country internationally. Develops knowledge across Physics, Chemistry and Biology. Strengthens analytical and critical-thinking skills. Provides experience with theoretical and experimental science problems. Opportunity to interact with talented students from around the world. Strong early achievement for a STEM-focused academic portfolio. Particularly relevant for students interested in STEM, Medicine, Engineering and Natural Sciences.

Must be a school student. Must be under 16 years old on December 31 of the competition year. Must qualify through the national selection process of the country they represent. Students generally cannot apply individually to the international competition; they participate as members of a national delegation. Each team can include up to 6 students and 3 leaders. National selection procedures are organized by the relevant organizations in each country.