The International Science Challenge Olympiad (ISCO) is an international academic competition designed to inspire students to explore science beyond the classroom. The Olympiad encourages scientific thinking, creativity, innovation, and real-world problem-solving through engaging and age-appropriate challenges.
ISCO provides students with an opportunity to showcase their scientific knowledge while competing with peers from around the globe.
The International Science Challenge Olympiad (ISCO) is committed to providing a transparent, fair, and academically enriching competition environment for students worldwide.

Select the ISCO level that matches your current grade. ISCO 1 (Grades 1–2) ISCO 2 (Grades 3–4) ISCO 3 (Grades 5–6) ISCO 4 (Grades 7–8) ISCO 5 (Grades 9–10) ISCO 6 (Grades 11–12) Each category is designed with age-appropriate science topics and challenges.

Register through your school coordinator or the official registration platform before the registration deadline. Make sure all personal and academic information is entered accurately to ensure smooth participation and certificate issuance.

Review the topics covered in your category and understand the concepts that may appear in the examination.

Download official sample papers and previous competition papers to become familiar with: Question formats Difficulty levels Scientific problem-solving approaches Time management strategies Regular practice can significantly improve performance.

Qualification rounds run between 26 October and 30 November 2025. Arrive (or log in) at least 15 minutes early to confirm your details and seating.

Results are announced on 15 December 2025. Medal and Diamond winners are notified of their Global Round eligibility and discount tier at the same time.