Tag: Biology Olympiad
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50 Questions in 50 Minutes, No Penalty: How the USABO Open Exam Scoring Rules Should Change the Way You Sit It (2026)
USABO Open Exam: 50 questions, 50 minutes, no penalty. The tactical consequence is clear: never leave a blank, pace at one minute each. Here is how to turn the rules into marks.
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Where the Marks Are: Budgeting Your USABO Revision Hours by the Seven Subject Areas (2026)
USABO is weighted: Animal 25%, Cell 20%, Genetics 20%, Plant 15%, Ecology 10%, Ethology & Biosystematics 5% each. Turn those percentages into a revision-hour budget.
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The USABO Semifinal Exam, Decoded: What Happens After You Pass the Open Exam (2026)
Most USABO guides stop at the Open Exam. The Semifinal is the round that really decides Nationals: 120 minutes, three parts, top-20 gate. Here is how it works.
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USABO for International Students: The China-Region Pathway (2026)
Unlike some US national-team competitions, the USABO has a China-region pathway, so international students can sit it and earn recognition. Here is who can take part, how the China-region awards work, and what it signals for applications.
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USABO vs BBO: Which Biology Olympiad Should You Sit First? (2026)
USABO and BBO test most of the same biology, and the China-region BBO now sits in January — about ten weeks before the USABO China-region Open Exam in early April. That makes BBO an ideal warm-up, and one prep cycle can realistically target both. Here is how to plan it.