Welcome to the official site of the United States Earth Science Olympiad.

The United States Earth Science Olympiad (USESO) is a competition for high school students in the United States designed to promote Earth science education on a national scale. In addition to preparing students for the international competition, the International Earth Science Olympiad (IESO), the USESO program nurtures the scientific, practical, and team skills necessary for success in the advocacy of the Earth and its global systems.

Registration for USESO 2019 is now CLOSED. Signup to be notified about future iterations of USESO here

Latest News: Congratulations to all students chosen to represent Team USA at IESO 2019 in Daegu, South Korea.

The mentors and students of United States Earth Science Olympiad (USESO) 2018.