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Who are we?

Organizing Center for STEM Olympiad (OCSO) is an organization engaged in STEM development to create 21st century skills (critical thinking, creative thinking, collaborations, communication and computational thinking) through competitions, contests and olympiads. The concept of this organization is how to carry out the STEM Olympiad to create 21st century skills (critical thinking, creative thinking, collaborations, communication and computational thinking).

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Finalist of the International Team Biology Olympiad (ITBC) 2025

Here we announce the results of the International Team Biology Olympiad (ITBC) 2025. Congratulations ! for your Achievement. See you in Final Round

Asian Chemistry Olympiad (AChO)

Chemistry competition program for students in Asia and around the world. Held every January every year.

International Life Science Olympiad (ILSO)

Life Science (Biology and Chemistry) competition program for students from Asia and around the world. Held every May every year.

World Young Mathematics Olympiad (WYMO)

Mathematics competition program for students in Asia and around the world. Held every August every year.

World Young Physicist Olympiad (WYPO)

Physics competition program for Asian and worldwide students. Held every November every year.

Find out about our upcoming events

We are open to programs from us and from our alliance members. Please visit to learn more about STEM development programs.

International Team Chemistry Challenge (ITChC)

The International Team Chemistry Olympiad (ITChC) is an international team-based chemistry competition designed to test the knowledge, analytical skills, and creative thinking abilities of high school students from around the world. All competition rounds are completed in teams, emphasizing collaboration, scientific communication, and strategic problem-solving. Objectives : • Develop collaboration among students in solving complex chemistry problems. • Enhance critical, creative, and logical thinking skills. • Foster interest in chemistry in a global context and its real-world applications. • Encourage science-based innovation to solve real-life problems.

World Young Physicist Olympiad (WYPO)

The World Youth Physics Olympiad (WYPO) is a prestigious international competition designed to challenge and inspire young minds in the field of physics. Organized by the Organizing Center for STEM Olympiad (OCSO), WYPO brings together talented students from across the globe to compete in two rounds: an online qualification phase and a final round held offline in Bali, Indonesia. The competition fosters critical thinking, scientific reasoning, and global collaboration among students in grades 7 to 12 and college level.

International Geometry Olympiad Challange (IGOC) Vol.3

International Geometry Olympiad Challenge (IGOC) Vol. 3 is a prestigious international competition that brings together outstanding students from around the world to showcase their skills in geometry. Now in its third edition, IGOC aims to sharpen logical reasoning, creativity, and deductive thinking through a series of classical and modern geometry problems. Designed for middle and high school students with a strong interest in mathematics, IGOC is held to international standards and promotes not only academic excellence but also a spirit of global collaboration and passion for the mathematical sciences.

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Why STEM Competitions Matter — And How They Sharpen Students’ Skills
Award of the Lavoisier International Chemistry Olympiad (LIChO) 2025
Finalist of the Lavoisier International Chemistry Olympiad (LIChO) 2025