Bangladesh Junior Science Olympiad (BdJSO): Registration Going on, Last date 20-08-26

Bangladesh Junior Science Olympiad (BdJSO): Registration, Eligibility, Preparation and Details

12th BdJSO 2026 Registration is Now Open! Register Now
Before Registration Read it

Bangladesh Junior Science Olympiad (BdJSO) is one of the most important science competitions for school students in Bangladesh. It encourages students to develop curiosity about science, solve challenging problems and build interest in scientific research. The official website, bdjso.org, provides information about the Olympiad, rules, preparation resources, question banks, announcements and other important updates.

Key Registration Rules & Details


Dates: August 5, 2026, to August 20, 2026.
Fee: Completely free (no cost to register).
Where to Register: Bangladesh Junior Science Olympiad portal.
Categories:Primary: Grades 3 to 5Junior: Grades 6 to 8Secondary: Grades 9, 10, 11 (born on or after January 1, 2011) and SSC 2026 candidates.
Eligibility: Open to Bangla medium, English version, English medium, and madrasa students.

What is Bangladesh Junior Science Olympiad?

The Bangladesh Junior Science Olympiad (BdJSO) is an initiative designed to increase students' interest in science and help identify talented young students who can represent Bangladesh internationally. According to the official BdJSO website, initiatives to popularize science among Bangladeshi students have been conducted since 2013, while BdJSO has been organized jointly by the Society for the Popularization of Science, Bangladesh and Bangladesh Freedom Foundation since 2015.

The competition also serves as an important pathway for selecting students for the International Junior Science Olympiad (IJSO), an international competition for students under 16 years of age.

BdJSO Categories

BdJSO is organized in different categories so that students can compete with participants of an appropriate academic level. The official information lists the following categories:

  • Primary Category: Students of Classes 3 to 5.
  • Junior Category: Students of Classes 6 to 8.
  • Secondary Category: Students of Classes 9 to 10 and eligible Class 11 students according to the specified birth-date criteria.

Students should always check the latest official announcement and eligibility rules before registering because eligibility requirements can change from year to year.

How Does the BdJSO Selection Process Work?

The BdJSO journey can involve several stages. The official website describes a pathway that progresses from registration and regional competition to the national level, national camp and selection tests for the international team.

  1. Online registration
  2. Regional Olympiad
  3. National Olympiad
  4. National camp
  5. Selection tests and training
  6. International team selection

The exact schedule, venues and registration dates should be confirmed from the official website because these details are announced for each year's competition.

BdJSO Registration

Students interested in participating should follow the registration instructions published by BdJSO. Previous official rules have directed participants to use the online registration platform for registration. The official website also publishes announcements regarding registration and competition stages.

Before completing registration, students should carefully check their class, age or birth-date eligibility, category, required information and registration deadline.

BdJSO Syllabus and Preparation

Preparation is an important part of success in the Junior Science Olympiad. Instead of relying only on memorization, students should develop strong conceptual understanding and problem-solving skills.

The official BdJSO website provides preparation resources, recommended books and previous questions. Its question-bank section includes archived questions from previous regional and national rounds.

A good preparation strategy includes:

  • Strengthening basic concepts in Physics, Chemistry and Biology.
  • Practicing previous BdJSO questions.
  • Solving conceptual and numerical problems regularly.
  • Learning how to analyze unfamiliar scientific situations.
  • Practicing within a limited amount of time.
  • Reviewing mistakes after every practice session.

BdJSO Question Pattern

The format can vary depending on the year and stage of the competition. According to the published rules for BdJSO 2025, questions were provided in both Bangla and English, with approximately 12 to 20 questions and a time limit of around 1 to 1.5 hours. Participants were evaluated according to the marks assigned to individual questions.

Students should therefore focus on understanding scientific concepts rather than preparing only through conventional textbook exercises.

Why Should Students Participate in BdJSO?

Participating in BdJSO can provide students with valuable academic experience. It gives young learners an opportunity to test their scientific knowledge, develop problem-solving abilities and interact with other students who have similar interests.

For high-performing students, the competition can also become part of the pathway toward representing Bangladesh at the International Junior Science Olympiad. The 2025 BdJSO program selected national winners for further training and international team selection.

Official BdJSO Website

Students, parents and teachers should use the official BdJSO website for the most reliable information about registration, rules, announcements, preparation materials and previous questions.

Official website: https://bdjso.org/

Frequently Asked Questions

What does BdJSO stand for?

BdJSO stands for Bangladesh Junior Science Olympiad.

Who can participate in BdJSO?

Eligibility depends on the competition year and category. The official website has listed Primary, Junior and Secondary categories, with specific class and birth-date requirements.

Where can I find previous BdJSO questions?

Previous questions are available through the question-bank/archive section of the official BdJSO website.

Is BdJSO connected with IJSO?

Yes. BdJSO is used as part of the process for identifying and preparing students for Bangladesh's participation in the International Junior Science Olympiad.

Conclusion

Bangladesh Junior Science Olympiad (BdJSO) is an excellent opportunity for school students who enjoy science and want to challenge themselves beyond regular classroom learning. By studying concepts, practicing previous questions and following official announcements, students can prepare effectively for the competition. For the latest registration dates, eligibility requirements, rules and preparation resources, always check the official website at bdjso.org.

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