International Physics Olympiad vs International Biology Olympiad (IBO)
Comparing two elite STEM opportunities. Both are olympiads for high school students.
| International Physics Olympiad | International Biology Olympiad (IBO) | |
|---|---|---|
| Prestige Tier | Tier 1 — Elite | Tier 1 — Elite |
| Type | Olympiad | Olympiad |
| Organization | International Physics Olympiad Organization | International Biology Olympiad |
| Acceptance Rate | Extremely selective. Only 5 students per country advance (approximately 400-420 students total compete at IPhO from 80+ countries). At national level, typically 0.01-0.1% of secondary students reach IPhO depending on country. | Highly competitive; typically only 4 students per country compete at international level. Exact global acceptance rate unknown but extremely selective |
| Applicants | Varies dramatically by country. China, Russia, USA, South Korea, India, and Taiwan have thousands of competitors in national rounds. Globally, estimated 100,000+ students compete in preliminary rounds across all participating countries. | Varies significantly by country; some countries have dozens to hundreds of participants in national preliminaries |
| Deadline | — | — |
| Cost to Apply | $0 | Free |
| US Only | No / International | No / International |
| Grades | Secondary school students (typically grades 10-12, though exact definitions vary by country) | High school students (typically ages 14-20, exact age limits vary by country) |
| College Impact | Extremely prestigious for college admissions. IPhO medals (especially gold) are among the most respected accomplishments in high school physics competitions and are viewed extremely favorably by: (1)... | 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... |