January 1: Registration opens for the National Open Exam and LEES Program

March 5: Deadline to register for the National Open Exam

March 13 – 17: National Open Exam (students and proctors to agree on exact date)

March 18: Proctors may return exam materials to students

March 19: Deadline to submit Optional Supplementary Questions

April 12: Release of results from the national selection process

April TBD: Registration for LEES opens

June TBD: Invitations for LEES program sent

June 15 – 21: USESO Training Camp (Hosted at University of Tulsa campus)

July 13 – 18: LEES Program (Hosted online)

August 7- 17: IESO 2025 in Jining, China (U.S. Participation TBD)

updated January 1, 2025