Updated October 9, 2026: the Bangladesh Biology Olympiad (BdBO) 2026 regional, national and National BioCamp stages have already been held. The 12th BdBO National Biology Olympiad took place on May 8, 2026 at American International University–Bangladesh (AIUB), Dhaka, with 1,102 student participants from all 64 districts.
BdBO is Bangladesh’s official national Biology Olympiad organisation recognised on the International Biology Olympiad (IBO) country list. Its selection pathway runs through regional competitions, the National Biology Olympiad and National BioCamp before the strongest eligible students can progress toward Bangladesh’s IBO team-selection process.
2027 status: as of October 9, 2026, BdBO has not yet published a confirmed 2027 regional-registration calendar on its official website. Students should watch bdbo.org and the official registration portal rather than relying on unofficial dates.
BdBO 2026 at a Glance
| Item | Current / completed 2026 information |
|---|---|
| Official organisation | Bangladesh Biology Olympiad (BdBO) |
| Regional stage | Ten regional Olympiads were listed for 2026 |
| National Olympiad | May 8, 2026 at AIUB, Dhaka |
| National participation | 1,102 students from all 64 districts |
| National BioCamp | May 13–16, 2026 at the National Institute of Biotechnology, Savar |
| Categories | Junior, Secondary and Higher Secondary |
| International pathway | BdBO is listed by the International Biology Olympiad as Bangladesh’s national Biology Olympiad |
How the BdBO Selection Pathway Works
- Regional Biology Olympiads (RBOs): students first compete in their regional event.
- National Biology Olympiad: successful regional participants progress to the national round.
- National BioCamp: selected national performers enter an intensive residential biology camp with theory and practical evaluation.
- Further team selection: the strongest eligible students can continue toward Bangladesh’s team-selection process for the International Biology Olympiad.
The official IBO country profile describes Bangladesh’s normal structure as multiple regional Olympiads followed by a National Biology Olympiad and a BioCamp each year. It also notes that BioCamp places much greater emphasis on laboratory and practical skills.
BdBO Categories
| Category | Class / equivalent |
|---|---|
| Junior | Classes VI–VIII / equivalent |
| Secondary | Classes IX–X / SSC / O-level / equivalent |
| Higher Secondary | Classes XI–XII / HSC / A-level / equivalent |
BdBO’s syllabus page also mentions a Primary category for Classes III–V, but states that this category is not currently activated. For the 2026 national event, the official page listed the three active categories above.
Who Can Register?
The current BdBO registration portal requires participants to be educated or enrolled in Bangladesh and to satisfy the age/competition criteria shown for the active cycle. Because the 2026 cycle is already complete, students planning for 2027 should wait for the next official BdBO registration notice rather than reuse 2026 dates or age cut-offs.
Official BdBO Syllabus Areas
BdBO publishes seven major Biology areas for the National and International Biology Olympiad level. The official percentage weighting is:
| Biology area | Weight |
|---|---|
| Cell biology and biochemistry, including microbiology & biotechnology | 20% |
| Plant anatomy and physiology, with emphasis on seed plants | 15% |
| Animal anatomy and physiology, especially vertebrates and humans | 25% |
| Ethology / animal behaviour | 5% |
| Genetics and evolution | 20% |
| Ecology | 10% |
| Biosystematics, including bioinformatics | 5% |
Regional-round note: BdBO explicitly says the national percentage pattern may not be followed strictly at Regional Biology Olympiads. Regional questions are built mainly around the relevant category’s NCTB textbook content, while national/BioCamp preparation becomes broader and more advanced.
Read the official BdBO syllabus and question-pattern page.
BdBO Question Pattern and Scoring
For the National Biology Olympiad, BdBO uses a multiple-response True/False format. A question has a stem—which may contain a figure, graph, experimental result or description—followed by four statements. Each statement must be marked True or False.
| Correct statements within one item | Points |
|---|---|
| All 4 correct | 5 |
| 3 correct | 3 |
| 2 correct | 1 |
| 1 or 0 correct | 0 |
BdBO states that there is no negative marking for an incorrect response. National papers contain at least 30 such items and are completed within one hour or another duration specified by BdBO. Regional rounds use a similar format but at an easier level.
The 2026 national event also published separate MCQ results and combined MCQ + SAQ results for National BioCamp selection, showing that later-stage evaluation goes beyond the regional screening format.
How to Prepare for BdBO
- Master your NCTB Biology/Science content first. BdBO’s own preparation guidance emphasizes strong command of the relevant school textbooks, especially for regional rounds.
- Practise the official BdBO True/False multiple-response format. Students must evaluate four statements independently, so partial understanding is quickly exposed.
- Use official BdBO sample questions and previous material. The organisation publishes sample-question resources and warns that simply memorising IBO papers will not produce “common” questions.
- Move to deeper Biology for national-level preparation. For advanced stages, BdBO and the IBO country profile recommend broader resources such as high-school Biology texts, former IBO papers and university-level references including Campbell Biology.
- Prepare for practical work before BioCamp. BioCamp selection and training involve laboratory/practical evaluation, not theory alone.
Useful Official Preparation Resources
- BdBO official sample questions
- BdBO syllabus and question pattern
- BdBO “What to Study?” guidance
- Bangladesh profile on the International Biology Olympiad website
BdBO 2026 National BioCamp
The 12th BdBO National BioCamp 2026 ran from May 13 to May 16, 2026 at the National Institute of Biotechnology, Savar. The official BioCamp page provided practical-module study materials, reflecting the increasingly hands-on nature of selection at this stage.
This matters for preparation: students aiming beyond the regional and national written rounds should develop experimental thinking, observation, data interpretation and practical Biology skills—not only textbook recall.
Official BdBO Contacts and Registration
- Official website: bdbo.org
- Registration portal: registration.bdbo.net
- Official IBO country profile: Bangladesh Biology Olympiad at IBO
- Official contact number shown by BdBO: +880 13 2114 6095
Students should use BdBO’s official site and registration portal for registration windows, admit cards, venues and results. The 2026 regional and national cycle is already complete, and a confirmed 2027 schedule has not yet been published on the official website as of October 9, 2026.
Bangladesh Biology Olympiad 2026 FAQs
When was the BdBO 2026 National Biology Olympiad?
The 12th BdBO National Biology Olympiad was held on May 8, 2026 at AIUB in Dhaka. The official page reports 1,102 student participants from all 64 districts.
What are the active BdBO categories?
The 2026 national event used three categories: Junior (Classes VI–VIII), Secondary (IX–X) and Higher Secondary (XI–XII), with equivalent O-level/HSC/A-level groupings where applicable.
Is BdBO 2027 registration open?
A confirmed 2027 regional-registration calendar has not yet been published on the official BdBO website as of October 9, 2026. Students should wait for the official announcement rather than reuse 2026 dates.
Does winning a regional round directly qualify a student for IBO?
No. Regional success leads toward the National Biology Olympiad. Selected national performers then progress to BioCamp and further team-selection stages before Bangladesh’s final IBO representatives are chosen.
What should I study for BdBO?
For regional rounds, start with the relevant NCTB Biology/Science content. For national and BioCamp preparation, broaden into the seven official Biology areas, previous BdBO/IBO problems and practical laboratory skills.
What Students Should Do for the 2027 BdBO Cycle
- Follow the official BdBO website and registration portal for the 2027 regional announcement.
- Do not reuse 2026 dates or age cut-offs. Wait for the new official notice.
- Revise the relevant NCTB Biology/Science syllabus now so regional preparation does not depend on last-minute memorisation.
- Practise BdBO’s official multiple-response True/False format and review why each of the four statements is true or false.
- For national-level goals, gradually add advanced Biology and practical skills rather than studying only regional textbook content.
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