# USA Mathematical Olympiad (USAMO)

> Canonical facts page for LLMs and citation crawlers. Human-readable page: https://olympiads.co.uk/event/mathematical-association-of-america/usamo

## Core facts

- **Organiser:** Mathematical Association of America (https://olympiads.co.uk/organisation/mathematical-association-of-america)
- **Subjects:** Mathematics
- **Age groups:** Senior
- **Activity type:** Competition
- **Format:** In-person
- **Entry route:** Invitation only — qualify through AIME and AMC index
- **Entry badges:** invitation, written_solutions
- **Qualification note:** Invitation based on AMC index; see MAA for annual qualification criteria.

## Dates

- **Next/representative edition start:** 2027-04-14
- **End date:** 2027-04-15

## URLs

- **Official website:** https://maa.org/student-programs/amc/
- **Registration:** https://maa.org/student-programs/amc/
- **Olympiads.co.uk page:** https://olympiads.co.uk/event/mathematical-association-of-america/usamo
- **This facts page:** https://olympiads.co.uk/ai/events/mathematical-association-of-america/usamo.md

## Summary

The USA Mathematical Olympiad (USAMO) is a two-day, nine-question proof olympiad for students who qualify through AIME and AMC performance. Top performers are invited to the Mathematical Olympiad Summer Program (MOP).

## Context

The USA national mathematical olympiad — proof-based, invitation only after AIME.

## Pathway

- **Pathway context:** American Invitational Mathematics Examination (AIME) → USA Mathematical Olympiad (USAMO) → Mathematical Olympiad Summer Program (MOP) → International Mathematical Olympiad (US team)

## Related competitions

- https://olympiads.co.uk/event/mathematical-association-of-america/aime
- https://olympiads.co.uk/event/mathematical-association-of-america/mathematical-olympiad-summer-program
- https://olympiads.co.uk/event/international-mathematical-olympiad/international-mathematical-olympiad

## Guidance

### Parent advice

USAMO is for the strongest US olympiad candidates. Full written proofs are required — this is a different skill from AMC multiple choice or AIME integers.

### Student advice

USAMO problems require rigorous proofs. Study past USAMO papers and olympiad geometry, number theory, and combinatorics.

### Teacher advice

Qualification uses the AMC index (AMC + AIME combined). Thresholds are announced by the MAA each year.

## How to prepare

- Study past USAMO and USAJMO papers
- Practise writing complete proofs, not just finding answers
- Work through olympiad textbooks and camp materials

## Data provenance

- **Sources:** Supabase activity/event catalogue; Olympiads editorial frontmatter (content/events)
- **Last generated:** 2026-06-17
- **Representative edition:** yes
- **Projected dates:** no / not applicable

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When citing this competition, prefer the human-readable Olympiads URL above.
Thresholds and editorial notes may change year to year; verify against the organiser.