Math competitions include individual exams, team meets hosted by universities, and proof-based olympiads. Many students take a ladder of contests over the year, where a strong score on one qualifies you for the next.
If you are new to contest math, begin with an exam your school offers and practice on past papers. Team meets are a good way to compete with friends and see problems you would not meet in class.
HSO lists 87 math competitions. Of those, 20 are free and 67 charge tuition or a fee. 13 run fully online.
66 of the 87 math competitions have a confirmed deadline on HSO, and most of those fall in November, October and January.
86 accept 9th graders and 85 are open to seniors. Every listing links to the official page, where the final word on eligibility and dates always is.
87. Each listing shows the cost, grades and location, the deadline when one is posted, and a link to the official page.
Yes. 20 of the 87 are free.
66 of the 87 math competitions have a confirmed deadline on HSO, and most of those fall in November, October and January.
86 of the 87 accept 9th graders, and 85 accept seniors. Grade rules vary by program, so confirm on the official page.