International Mathematical Olympiad vs International Biology Olympiad (IBO)
Comparing two elite STEM opportunities. Both are olympiads for high school students.
| International Mathematical Olympiad | International Biology Olympiad (IBO) | |
|---|---|---|
| Prestige Tier | Tier 1 — Elite | Tier 1 — Elite |
| Type | Olympiad | Olympiad |
| Organization | IMO Official | International Biology Olympiad |
| Acceptance Rate | Extremely competitive; approximately 0.01-0.1% of high school students worldwide reach IMO. For USA: ~6 students selected from 300,000+ AMC participants annually | Highly competitive; typically only 4 students per country compete at international level. Exact global acceptance rate unknown but extremely selective |
| Applicants | Approximately 5,000-6,000 contestants from 100+ countries compete at IMO annually. USA sends 6 representatives from ~300,000 AMC 10/12 participants | Varies significantly by country; some countries have dozens to hundreds of participants in national preliminaries |
| Deadline | — | — |
| Cost to Apply | Free | Free |
| US Only | No / International | No / International |
| Grades | High school students only; typically grades 9-12 (ages 13-19) | High school students (typically ages 14-20, exact age limits vary by country) |
| College Impact | Extremely positive and highly prestigious. IMO medalists (especially gold) are exceptionally rare and highly valued by top universities globally. Impact includes: (1) Gold/Silver medalists essentially... | Extremely positive. Participation in the International Biology Olympiad—especially reaching the international finals—is one of the most prestigious achievements in high school STEM. College admissions... |