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
