The United States of America Mathematical Talent Search (USAMTS) is a mathematics competition open to all United States students in or below high school.
Professor George Berzsenyi initiated the contest in 1989 under the KöMaL model and under joint sponsorship of the Rose-Hulman Institute of Technology and the Consortium for Mathematics and its Applications.
As of 2004, the USAMTS is sponsored by the National Security Agency and administered by the Art of Problem Solving foundation. There were 718 participants in the 2004-2005 school year, with an average score of 49.25 out of 100.
The competition is proof and research based. Students submit proofs within the round's timeframe (usually a month), and return solutions by mail or upload their solutions in a PDF file through the USAMTS website. During this time, students are free to use any mathematical resources that are available, so long as it is not the help of another person. Carefully written justifications are required for each problem.
Prior to academic year 2010–2011 the competition consisted of four rounds of five problems each, covering all non-calculus topics. Students were given approximately one month to solve the questions. Each question is scored out of five points; thus, a perfect score is .
In the academic year 2010-2011, the USAMTS changed their format to two rounds of six problems each, and approximately six weeks are allotted for each round.