About This Resource
Comprehensive, free study notes for IB Biology HL specifically aligned with the new 2025 syllabus for first assessment. Written by expert IB teachers covering all four major themes with detailed sub-sections and structured learning objectives for each topic. Complete coverage of the 2025 IB Biology HL syllabus with detailed topic-by-topic notes. Organized structure matches the new IB curriculum framework for easy navigation. Written by qualified IB teachers and PGCE educators with subject expertise. Completely free access to all study materials without subscription requirements. Note: Independent tutoring provider not officially endorsed by IBO. Verify syllabus alignment with current course requirements and use alongside official IB materials.
Resource Type
Study Notes
Time to explore: 6 min read
⚠️ Disclaimer
This resource is independently operated and is not officially endorsed by the International Baccalaureate Organization (IBO) or other exam boards unless stated otherwise. As with any revision tool, it should be used in addition to the official syllabus, textbooks, past papers, and teacher instruction — not as a sole resource. Always check for current syllabus version and assessment updates before relying on any online materials.