USABO 2025 Open Exam scores

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2025 USABO Open Exam Cutoff Scores

Semifinalist Cutoff score: 28 to 50

Honorable Mention Certificate (Top 20%): 21 to 27

Merit Certificate (Top 30%): 17 to 20

2025 USA Biology Olympiad

General USA Biology Olympiad Information

Number of registered students: 11,900

Number of states represented: 44

International Schools represented: 25

Number of students registered for the Open Exam: 5095

Score needed to become a Semifinalist: 28

Average score (out of a possible 50): 18

Highest score: 42