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Youth International Math Olympiad
Build real mathematical skills, prove what you can do on a world stage, and join a community of driven STEM students:organized by Next Horizon.
About YIMO
The Youth International Math Olympiad (YIMO) is a free, online math competition organized by Next Horizon. It exists to give underrepresented students a rigorous proving ground: a place to sharpen problem-solving skills, demonstrate ability on an international stage, and build the quantitative foundation that opens doors to STEM research and careers.
YIMO features individual and optional team events, problems spanning a range of difficulties, and meaningful recognition for every level of achievement. Open to all students worldwide, free to enter.
Who Can Compete
Middle & high school students worldwide. Free to enter.
Integrity
Proctored online via exam.net with screen & camera monitoring.
Competition Format
Divisions
- Division 1 & 2:Open to all high school students
- Division 3:Recommended for middle schoolers; high school students cannot compete in this division
Question Types
- Individual:Mixed MCQ and AIME-type (answers 000–999)
- Team Event:Optional; AIME-type problems. Compete as an individual or register as a team.
- Tiebreakers:Hard tiebreaker round for tied competitors
Prizes
- Cash prizes or merchandise to be distributed among top finishers
- Special grand award dependent on sponsors (e.g. Wolfram, AoPS, Desmos)
- Sweepstakes prize for the school with the most cumulative points
Participation Requirements
- Valid student ID or institutional email with graduation year
- Parental consent/acknowledgement form required
- Two-device setup for competition integrity (camera + contest device)
Awards
Gold Medal
Top 10%
Silver Medal
Top 20%
Bronze Medal
Top 30%
Certificate of Merit
Top 40%
Honorable Mention
Selected
Certificate of Participation
All competitors
Get Involved
YIMO is currently in development. Want to help run it? We're looking for problem writers, graphic designers, workshop designers, and volunteer proctors.
Join the Team