In the recently concluded 2026 season, Hanlin students achieved outstanding results once again. A total of 81 students won Gold Awards in the British Biology Olympiad, while 10 students successfully advanced to the USABO Semifinal Round, ranking among the top 10%. Final results are still being updated.
Based on past university admission outcomes, many students who successfully received offers from top universities had USABO and BBO awards on their academic profiles. Countless high-achieving students have proven through their own experience that with a scientific preparation plan, students can effectively prepare for both USABO and BBO at the same time.
Now, the 2027 new season has officially begun. Whether you are a beginner just starting biology competitions or an experienced competitor aiming for higher awards, it is time to clarify your preparation path and set your goals.
Why USABO and BBO Are Must-Try Competitions for Biology Students
USABO: The USA Biology Olympiad, an Academic Passport to Ivy League Universities
The USA Biology Olympiad, also known as USABO, is hosted by the Center for Excellence in Education, or CEE. It is one of the most academically rigorous and influential biology competitions in the United States.
The exam covers knowledge from AP Biology and college-level General Biology. It is highly specialized and challenging.
Value and Highlights of USABO
Every year, more than ten thousand outstanding students participate in USABO. High-performing students are highly valued by top universities such as Harvard, MIT, and Stanford.
Gold Award winners are often highly competitive in top university applications, and some schools may even offer special scholarships to outstanding biology competitors.
Starting from the 2025 season, USABO added two major testing areas: neurobiology and bioinformatics. This makes the competition even more closely connected to cutting-edge scientific research.
BBO: The British Biology Olympiad, a Strong Academic Credential for G5 Applications
The British Biology Olympiad, also known as BBO, is hosted by the Royal Society of Biology, or RSB. It is the oldest and most influential biology competition for secondary school students in the United Kingdom.
The exam is based on A-Level Biology and includes diverse question types. Compared with USABO, BBO has a relatively higher award rate.
Value and Highlights of BBO
In the University of Cambridge’s official recommended academic activities list, BBO is clearly recommended for applicants to Natural Sciences with a focus on Biology.
The award rate is around 60%, making it relatively beginner-friendly and suitable as an entry-level biology competition.
BBO questions emphasize graph analysis, data interpretation, and critical thinking, which are highly aligned with the research skills required at university level.
USABO and BBO: Choose One or Prepare for Both?
After understanding the high academic value and university recognition of USABO and BBO, many students face an important question: should I choose one competition, or should I prepare for both?
The two competitions have a high degree of overlap in knowledge points, but they differ in difficulty, question style, and application relevance. Choosing the right path can greatly improve preparation efficiency, while choosing the wrong one may lead to wasted effort.
The comparison below will help you understand the key similarities and differences between the two competitions.
Key Differences Between USABO and BBO
| Comparison Dimension | USABO: USA Biology Olympiad | BBO: British Biology Olympiad |
|---|---|---|
| Organizer | Center for Excellence in Education, CEE | Royal Society of Biology, RSB |
| Suitable Students | High school students of any grade | High school students of any grade |
| Exam Language | English | Bilingual: Chinese and English |
| Exam Duration | 50 minutes | 90 minutes |
| Question Format and Quantity | 50 multiple-choice questions | Around 90 multiple-choice and fill-in-the-blank questions |
| Difficulty Level | Very high, with strong depth and college-level knowledge required | High, with broad coverage based on A-Level Biology |
| Focus Areas | Knowledge depth, logical reasoning, and quick decision-making | Knowledge breadth, graph analysis, and experimental data interpretation |
| Expected New Season Date | Early April 2027 | Mid-January 2027 |
| Award Structure | Gold Award: top 10%; Silver Award: top 25%; Bronze Award: top 35%; Regional Honorable Mention: top 20% in each region excluding national award winners | Gold, Silver, Bronze, Highly Commended, and Commended awards are determined based on the performance of British students, with approximate cutoffs at the top 5%, 15%, 30%, 45%, and 60% respectively |
Starting from 2026, the BBO China exam date was moved from April to January, while USABO remains in April. This creates a natural time gap between the two competitions and makes combined preparation more practical.
Key Similarity: 70%–90% Knowledge Overlap
Although USABO and BBO have different styles, their core biology knowledge is highly aligned. This is the fundamental reason why preparing for both competitions at the same time is a highly effective strategy.
Highly Overlapping Knowledge Scope
Both competitions share core biology modules, including cell biology, genetics and evolution, animal and plant physiology, ecology, and biological systematics.
The knowledge overlap between the two competitions can reach 70%–90%. This means that systematic preparation for either competition can directly support preparation for the other.
Both competitions can be prepared using classic textbooks such as Campbell Biology, which provides a strong and unified knowledge framework.
Both Emphasize Advanced Scientific Thinking
Neither competition simply tests memorization. Both place strong emphasis on experimental design and analysis, graph and data interpretation, and the ability to apply biological principles to unfamiliar scenarios.
Whether it is experimental design questions in BBO or data analysis questions in USABO, students are expected to demonstrate scientific inquiry, critical thinking, and problem-solving skills.
Different Competition Dates Create a Strategic Advantage
Starting from 2026, the BBO China exam was moved forward to mid-January, while USABO remains in early April. This creates a valuable time gap between the two competitions.
A strong preparation path is to take BBO first in January, gain award experience and confidence, and then use the following three months to focus specifically on USABO in April. This allows students to follow a progressive strategy: secure a strong result first, then aim higher.
Preparation Advice
Preparing for both competitions at the same time is completely feasible. The two competitions share 70%–90% of their knowledge content, and their exam dates are staggered, with BBO in January and USABO in April. This creates an ideal pathway of preparing for BBO first and then advancing toward USABO.
Competition selection should depend on students’ application goals and academic foundation. Students mainly applying to U.K. universities may prioritize BBO, while those mainly applying to U.S. universities may prioritize USABO. Students applying to both the U.S. and the U.K. are strongly encouraged to prepare for both competitions.
Students with an intermediate biology foundation may start with BBO, while students with a stronger foundation can aim to prepare for both competitions simultaneously.
Textbooks provide the foundation, while past papers provide the most practical training. Campbell Biology is the shared knowledge base for both competitions. For BBO, students should practice recent past papers to improve coverage and speed. For USABO, students should focus on past papers from the last five years to strengthen depth, logic, and advanced reasoning.
In short, preparing for USABO and BBO together does not necessarily double the workload. Instead, by taking advantage of the overlap and complementarity between the two competitions, students can achieve a result greater than the sum of its parts.
