The AMC 10/12 are among the largest high school-level math competitions in the U.S. Both are taken individually, but several high school tournaments have both individual and team rounds.
The Harvard-MIT Math Tournament (HMMT), open to students grade 12 and below, is among the most prestigious high school level tournaments drawing close to 1000 contestants around the globe. High school tournaments like the HMMT provide insight into what a future in math may look like for students. It includes an individual round, a team round, and the guts round, where students work together to solve questions on an assortment of subjects. In 2022, the Random Math Team placed 2nd in the Guts Round, 4th in the Overall Sweepstakes, and Top 7 in the Team Round. One Random Math student placed 1st overall. For more information about HMMT, please see our page: https://www.randommath.com/tournaments/hmmt.
The Berkeley Math Tournament (BMT) is another well-known high-school mathematics competition. It takes place over two days and consists of one individual round, three team rounds, and a tiebreaker round. In 2021, 7 Random Math students placed in the top 10 individual awards, and 13 students placed in the Distinguished Honor Roll, the top 20 percentile of all competitors. Two Random Math Teams placed in the top 4 for team awards, and Random Math took home 1st place in Team Overall. For more information about BMT, please see our page: https://www.randommath.com/tournaments/bmt.
Other popular high school level math competitions include the Stanford Math Tournament, Caltech Harvey Mudd Math Competition, Carnegie Mellon Informatics and Mathematics Competition, Princeton University Mathematics Competition, and Math Majors of America Tournament for High Schools, hosted by Yale University.
For a complete list of middle school math tournaments, please see our page: https://www.randommath.com/tournaments/high-school-tournaments.