The United States team, sponsored by the Mathematical Association of America, has secured second place in the 66th International Mathematical Olympiad, earning five gold medals and one silver in the highly competitive event held in Australia.
The United States team achieved an outstanding performance at the 66th International Mathematical Olympiad (IMO), hosted on the Sunshine Coast of Australia from July 10 to July 20, 2025. Sponsored by the Mathematical Association of America (MAA), the team earned second place overall, with an impressive score of 216 points.
The IMO is renowned as the world’s premier mathematics competition for high school students, attracting young mathematicians from every corner of the globe. In this year’s edition, 110 countries were represented by 630 students, all competing to solve six challenging mathematical problems.
Of the six talented members of the US team, five secured gold medals while one won a silver, highlighting their exceptional problem-solving skills. Notably, team members Tiger Zhang and Alexander Wang ranked in the top ten individual scorers, underscoring the level of their mathematical prowess.
Comprising the 2025 USA IMO team were: Hannah Fox, 17, from California; Karn Chutinan, 18, from Massachusetts; Andrew Lin, 18, from New Jersey; Alexander Wang, 17, also from New Jersey; Qiao (Tiger) Zhang, 17, from California; and Ruilin (Calvin) Wang, 17, from Virginia.
Hannah Fox’s participation is especially significant, marking the second consecutive year a young woman was included in the USA IMO team. Her achievement was further celebrated with the Maryam Mirzakhani medal, awarded to the top female scorer in the Americas region.
The team benefited from expert guidance under head coach John Berman and deputy coach Yang Liu. Both played crucial roles in the intense training regimen at the MAA Mathematical Olympiad Summer Program, preparing the students for the rigors of international competition.
Students aspiring to join the USA IMO team must first succeed in a series of competitions organized by the MAA American Mathematics Competitions. These events are part of a broader initiative that sees roughly 300,000 K-12 students from over 6,000 schools and learning centers participating annually.
The success of this year’s team was generously supported by Jane Street, which contributed resources to facilitate the team’s journey to the Olympiad.
Further details about the MAA American Mathematics Competitions, including information on hosting a competition or getting involved, can be found through the formal channels of the MAA.
This remarkable achievement at the 66th International Mathematical Olympiad underscores the dedication and skill of the US team, reinforcing their position as leaders on the global stage in mathematical challenges.