United States Earth Science Organization
USESO prepares students to work on era-defining challenges that intersect Earth, technology, and society.
The National Open Exam will be held on February 25, 2027. Registration starts January 1 and ends February 15, 2027.
Training Camp will take place from June 12-20, 2027.
LEES registration is currently closed, and usually opens in May of each year.
All important dates have been posted on our Calendar.
Updated October 31, 2026
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Our program identifies and serves students who exhibit potential for becoming formidable leaders through deep understanding of a specific domain and independence of thought.
We provide students with opportunities for collaboration, creativity, and individual agency through competition, outdoor field studies, and discussions led by industry experts and faculty.
By investing in these students early in their journey, our impact compounds exponentially over time towards assembling a truly influential generation of leaders capable of making high-leverage decisions in the planet’s best interest.
The USESO National Open Exam takes place each year in the spring, and is the first step towards the USESO Training Camp and IESO. Registration for the Open Exam typically opens near the beginning of each year.
National Open Exam
The exam is administered in March for all students and helps determine those invited to the Training Camp. The syllabus and supplemental materials for the Open Exam and the Training Camp can be found under Preparation. Additionally, students often find Past Exams to be a valuable resource.
Training Camp
Students selected from the Open Exam are invited to a week-long residential camp in the summer (usually late June to early July) to learn, meet fellow Earth science enthusiasts, and prepare for the IESO. See Training Camp for eligibility and more information.
Participation in the LEES Program is not dependent on exam scores. Rather, students will be asked to submit one or more essays for admission. More information about the essay(s) will be provided when registration opens.