What the official pages establish
BDBO organizes regional biology olympiads and a national Biology Olympiad. Its syllabus describes a Higher Secondary category for classes XI–XII/HSC/A-level and includes animal anatomy and physiology with emphasis on vertebrates, especially humans. The 2026 national event took place on May 8, 2026, after regional rounds.
The 2026 registration page stated that entrants must be educated or enrolled in Bangladesh and born after July 1, 2006. Do not carry that cutoff, category rules, schedule, fee, or progression forward to another year without checking the new official notice. The 2026 competition is over.
