Purple Comet! Math Meet
A free, online team-based math competition open to middle and high school students worldwide, run annually since 2003, where teams collaborate to solve a set of challenging problems within a fixed time window.
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ASA Statistics Project Competition
National competition where students design and carry out their own statistical studies and present results, open to grades 7-12.
Wharton High School Data Science Competition
Annual data science competition focused on hockey analytics where high school teams analyze real sports data and compete for recognition.
AFSA National High School Essay Contest
An annual essay competition co-sponsored by the American Foreign Service Association and the U.S. Institute of Peace that asks high schoolers to write about diplomacy's role in resolving conflict, with a top prize including a Semester at Sea scholarship.
AMC 10/12 (MAA American Mathematics Competitions)
National contest series leading to AIME and USAMO, administered at schools or online through registered hosts with fall test dates.
Art of Problem Solving (AoPS) Online
Rigorous online courses & problem‑solving community; core resource for contest‑math and proofs (AoPS classes in algebra, NT, geo, combinatorics).
Berkeley Math Tournament (BMT)
Flagship Bay Area high school math tournament with both online and in-person editions at UC Berkeley, recurring annually with advanced problem-solving challenges.