Washington, DC - The United States team, sponsored by the Mathematical Association of America (MAA), has secured second place in the 66th International Mathematical Olympiad (IMO), held from July 10 to July 20, 2025, on the Sunshine Coast of Australia. The six high school team members received five gold medals and one silver medal for their outstanding individual performances.
The IMO is the world’s premier high school mathematics competition, attracting the best young mathematicians from around the globe. This year, 110 countries and 630 students competed. The US team scored 216 points, earning them second place. Individual scores are based on solutions to six challenging problems. US students Tiger Zhang and Alexander Wang placed in the top ten among all individuals.
Hannah Fox, Karn Chutinan, Andrew Lin, Alexander Wang, Qiao (Tiger) Zhang, Ruilin (Calvin) Wang
The 2025 USA IMO Team members are:
- Hannah Fox, 17 (California)
- Karn Chutinan, 18 (Massachusetts)
- Andrew Lin, 18 (New Jersey)
- Alexander Wang, 17 (New Jersey)
- Qiao (Tiger) Zhang, 17 (California)
- Ruilin (Calvin) Wang, 17 (Virginia)
Hannah Fox's participation marks the second consecutive year that the USA IMO team has included a young woman.
The US team is expertly guided by coach John Berman and deputy coach Yang Liu after completing intensive training at the MAA Mathematical Olympiad Summer Program.
Students qualify for the USA IMO team through a series of competitions organized by the MAA American Mathematics Competitions. A special thanks to Jane Street for supporting this year’s team! Each year, approximately 300,000 K-12 students from over 6,000 schools and learning centers worldwide participate in these competitions.
For more information on MAA AMC, including how to host a competition, participate, and other ways to get involved, please visit maa.org/amc.
About MAA
The Mathematical Association of America is the world’s largest community of mathematicians, students, and enthusiasts. We accelerate our understanding of our world through mathematics because mathematics drives society and shapes our lives. Learn more at maa.org.