The **International Earth Science Olympiad (IESO)** is a global competition that brings together high school students to test and expand their knowledge of Earth and environmental sciences. Students first qualify through their **national Earth Science Olympiad** or selection process, and top performers are invited to represent their country at the international finals. The competition covers topics such as geology, meteorology, oceanography, astronomy, and environmental science, combining theoretical exams with practical and sometimes field-based activities. IESO is best suited for students who are strongly interested in Earth science, enjoy problem-solving, and are motivated to study beyond their school curriculum. Participants gain experience in **scientific inquiry**, data interpretation, and collaborative problem-solving with peers from around the world. For students planning to apply to college, selection for a national team or participation in the international round can demonstrate: - **Advanced subject mastery** in Earth and environmental sciences - **Commitment to STEM**, particularly in fields related to Earth systems and sustainability - **International collaboration skills** through team and group activities Students interested in geoscience, climate science, environmental engineering, or related STEM fields may find IESO especially valuable as early exposure to topics and methods used in earth and planetary sciences. More information, including national selection procedures, is available on the official website.