Competitions
- USAMOUSA Mathematical Olympiad — Six proof-based problems over two days. Top contest for U.S. high school students.Latest: 2025
- USAJMOUSA Junior Mathematical Olympiad — Junior version of the USAMO, also proof-based.Latest: 2025
- AIMEAmerican Invitational Mathematics Examination — 15 short-answer problems, integers 0–999, 3 hours.Latest: 2025
- AMC 12American Mathematics Competition 12 — 25 multiple-choice problems for high school students, 75 minutes.Latest: 2025
- AMC 10American Mathematics Competition 10 — 25 multiple-choice problems for grades 10 and below.Latest: 2025
- AMC 8American Mathematics Competition 8 — 25 multiple-choice problems for middle school students, 40 minutes.Latest: 2024