International Olympiad in Informatics (IOI) vs US Physics Olympiad (USAPhO)
Comparing two elite STEM opportunities. Both are olympiads for high school students.
| International Olympiad in Informatics (IOI) | US Physics Olympiad (USAPhO) | |
|---|---|---|
| Prestige Tier | Tier 1 — Elite | Tier 1 — Elite |
| Type | Olympiad | Olympiad |
| Organization | International Olympiad in Informatics | American Association of Physics Teachers (AAPT) |
| Deadline | — | — |
| Cost to Apply | $0 | $0 |
| US Only | No / International | Yes |