IB science syllabus topic checklist: your 2026 guide
13 min readOliver Kidd (Co-founder)2 Jun 2026
An effective IB science syllabus topic checklist is one built specifically for your chosen Group 4 subject, aligned with the most recent IB Diploma Programme curriculum updates and exam requirements. Generic science lists waste your revision time. The IB DP requires students to study at least one Group 4 subject, and each subject carries its own distinct guide, assessment structure, and topic set. Tibertutor has seen first-hand how a well-constructed, subject-specific checklist transforms exam preparation from guesswork into a confident, structured process.
1. Why a single IB science syllabus topic checklist does not work
The IB DP sciences curriculum is structured around separate subjects, not one universal science syllabus. Biology, Chemistry, Physics, Environmental Systems and Societies, Design Technology, Computer Science, and Sports, Exercise and Health Science each have their own guide, their own command terms, and their own assessment weighting. Using a single checklist across all of them is like revising with the wrong map.
The problem is compounded by outdated resources. Teachers consistently recommend using the official current subject guide as your checklist base, because older checklist structures risk misaligning your revision with what is actually examined. The new DP science courses have removed the old optional topics entirely, replacing them with themed content areas that require a fresh approach.
- Biology, Chemistry, and Physics are the three most commonly chosen Group 4 subjects
- Each subject has distinct SL and HL content requirements
- Environmental Systems and Societies spans Group 3 and Group 4, requiring special attention
- Outdated checklists often include option topics that no longer appear in exams
Pro Tip: Always download the current subject guide directly from the IBO website before building or updating your checklist. If the guide does not match your first exam year, you are working from the wrong document.
2. How concept-based learning shapes your checklist
Concept-based teaching combines content knowledge, real-world context, and key concepts as integrated threads rather than isolated facts. This matters for your checklist because it changes how you should organise your topics. Grouping by concept areas, such as “energy transfer” or “genetic information,” gives you a more accurate picture of how the IB examines understanding.
The IB’s renewed emphasis on linking topics means that a checklist organised purely by chapter headings will not serve you well. Students who understand the connections between topics perform better on paper 3 style questions and extended response tasks. ManageBac’s support materials illustrate this clearly, showing how concept threads run across multiple topic areas within a single subject.
“Concept-based teaching energises students’ understanding and supports deeper learning than memorising lists of facts.” — ManageBac subject support guidance
When you design your checklist, group topics under their conceptual umbrella. Under “matter and energy” in Chemistry, for example, you would include stoichiometry, energetics, and kinetics together. This structure reflects how the IB actually tests you.
Pro Tip: Add a “big idea” column to your checklist alongside each topic. Writing one sentence about how a topic connects to a broader concept will deepen your understanding and flag gaps in your knowledge faster than a simple tick box.
3. Subject-specific IB science topics list: Biology, Chemistry, and Physics
The new DP science courses consolidate content into themes with clear SL and HL distinctions. Below are the core topic areas for each of the three main Group 4 subjects, based on the 2026 syllabus guides.
IB Biology topic checklist
Key IB Biology topics include cell biology, molecular biology, genetics, ecology, evolution, and human physiology. HL students extend into areas such as nucleic acid structure, the immune system in greater depth, and additional genetics content.
- Cell biology: cell structure, membrane transport, cell division
- Molecular biology: DNA structure, protein synthesis, metabolism
- Genetics: inheritance patterns, gene expression, biotechnology
- Ecology: ecosystems, nutrient cycling, conservation
- Evolution and biodiversity: natural selection, classification, speciation
- Human physiology: digestion, gas exchange, the nervous system, hormones
- HL extensions: additional detail on each theme plus dedicated HL-only content
IB Chemistry topic checklist
Key IB Chemistry topics encompass stoichiometry, atomic structure, bonding, energetics, kinetics, equilibrium, organic chemistry, and acids and bases. These form the foundation for examination success at both SL and HL. For a deeper dive into each area, Tibertutor’s IB Chemistry guide is a strong starting point.
- Stoichiometry and the mole concept
- Atomic structure and periodicity
- Chemical bonding and structure
- Energetics and thermochemistry
- Chemical kinetics
- Equilibrium
- Acids and bases
- Organic chemistry and functional groups
- HL extensions: advanced organic mechanisms, further thermodynamics, spectroscopy
IB Physics topic checklist
IB Physics syllabus themes for 2026 include Space, Time and Motion; the Particulate Nature of Matter; Waves; Fields; and Nuclear and Quantum Physics. Each theme specifies SL core content and HL extension material.
| Subject | Core SL topics | HL extensions |
|---|---|---|
| Biology | Cell biology, genetics, ecology, physiology | Nucleic acids, immune system depth, additional genetics |
| Chemistry | Stoichiometry, bonding, kinetics, organic chemistry | Advanced mechanisms, spectroscopy, thermodynamics |
| Physics | Mechanics, waves, fields, nuclear physics | Relativity, engineering physics, quantum detail |
4. How to build and use your checklist effectively
Effective IB science checklists divide into three layers: core concepts and skills, laboratory investigation readiness, and exam command word practice. Each layer serves a different purpose in your preparation, and neglecting any one of them creates a gap that shows up in your final grade.
Start with layer one. List every topic from your subject guide and mark your current confidence level: secure, developing, or not yet started. This gives you and your parents a clear picture of where revision time should go. Research on curriculum alignment shows that prioritising assessed topics is critical for effective revision, because complex or non-assessed content is taught less consistently across schools.
Layer two covers practical skills. Your internal assessment and paper 3 questions both draw on laboratory competencies, so your checklist should include skills such as designing investigations, processing data, and evaluating uncertainty. Layer three is command word fluency. Words like “deduce,” “evaluate,” and “outline” have precise meanings in IB marking schemes, and practising them deliberately closes the gap between knowing content and scoring marks.
- Download the current subject guide for your first exam year
- List all topics and rate your confidence for each
- Add a laboratory skills section covering IA and practical exam requirements
- Include a command word glossary and practise applying each one
- Review and update your checklist at the start of each new term
Pro Tip: Pair your checklist with an IB study schedule so each topic has a dedicated revision slot. A checklist without a timeline is just a list.
Key takeaways
A subject-specific IB science checklist, built on the current 2026 syllabus guide and organised by concept areas, is the most reliable tool for focused and confident exam preparation.
| Point | Details |
|---|---|
| Use subject-specific checklists | Each Group 4 subject has its own guide; one generic list will not cover your exam accurately. |
| Organise by concept, not chapter | Grouping topics under big ideas reflects how the IB actually assesses understanding. |
| Build three checklist layers | Cover core concepts, laboratory skills, and command word practice for complete preparation. |
| Prioritise assessed content | Focus revision on topics most likely to appear in external and internal assessments. |
| Update each academic year | Curriculum tweaks happen; check your subject guide at the start of every term. |
Why tailored checklists changed how I think about IB revision
The most common mistake I see students make is printing a checklist they found online and assuming it matches their exam. It rarely does. The IB has updated its science courses significantly for 2025 and 2026 exams, removing option topics and restructuring content into themes. A student revising from a 2019-era checklist is preparing for an exam that no longer exists.
What I have noticed with students who build their own checklists from the current subject guide is a shift in confidence. They stop feeling overwhelmed by the sheer volume of content because they can see exactly what is left to cover. Parents find this reassuring too. A checklist makes the invisible visible.
The HL versus SL distinction is another area where I see unnecessary anxiety. HL content is more detailed, not more frightening. When you map it clearly on a checklist alongside your SL content, the additional material feels manageable rather than daunting. Understanding how IB science grading works alongside your checklist also helps you prioritise where extra effort pays off most.
My honest advice: spend one hour at the start of each academic year rebuilding your checklist from scratch using the latest guide. That one hour saves you weeks of misdirected revision.
— Oliver
How Tibertutor supports your IB science preparation
Tibertutor is built specifically for IB Biology, Chemistry, and Physics students who want structured, exam-focused support. Every resource on the platform, from animated videos and detailed notes to topic-specific tests and mock exams, is aligned with the current IB DP syllabus. This means your checklist and your practice materials always point in the same direction.
For students ready to take their preparation further, Tibertutor’s IB science questionbank offers thousands of exam-style questions organised by topic, making checklist-driven practice straightforward. Parents looking to understand the IB science journey and support their child’s progress can explore dedicated guidance at Tibertutor for parents. Students can access tailored resources and track their progress at Tibertutor for students.
FAQ
What is an IB science syllabus topic checklist?
An IB science syllabus topic checklist is a structured list of all topics, skills, and concepts a student must cover for their chosen Group 4 subject, based on the current IB DP subject guide. It is used to track revision progress and align study with exam requirements.
Which subjects are included in IB Group 4 sciences?
Group 4 includes Biology, Chemistry, Physics, Environmental Systems and Societies, Design Technology, Computer Science, and Sports, Exercise and Health Science. Most students choose Biology, Chemistry, or Physics.
Do SL and HL students need different checklists?
Yes. SL and HL students share core content but HL students cover additional extension material in each theme. Your checklist should clearly separate SL topics from HL extensions so you know exactly what is required at your level.
How often should I update my IB science checklist?
Review and update your checklist at the start of each academic year and after any IB curriculum announcement. The 2025 and 2026 exam cycles introduced significant structural changes, so using a checklist from a previous cycle risks missing or misrepresenting current content.
Can parents use the checklist to support their child’s revision?
Absolutely. A well-structured checklist gives parents a clear overview of what their child is studying and where they need support. Pairing the checklist with resources like Tibertutor makes it easier for parents to have informed conversations about progress and priorities.