IB Environmental Systems & Societies SL
A transdisciplinary IB course bridging science and humanities: ecosystems, biodiversity, pollution, resource use, and the human societies that shape and are shaped by the environment.
Difficulty
Challenging
Popularity
51%
Past questions
3
Study tips
5
Key Topics
Exam Format & Dates
May & November, annually
Papers 1–2 + Internal Assessment
1–7 scale (IB)
4 = passing | 6–7 = excellent
| Section | Duration | Content | Weight |
|---|---|---|---|
| Paper 1 — Case Study | 1 hour | Resource-booklet questions | 25% |
| Paper 2 — Structured + Essay | 2 hours | Short answer + 2 essays | 50% |
| Internal Assessment | Coursework | 1 investigation | 25% |
Exam Breakdown & Insights
Difficulty · Demanding
Popularity score
Student Poll
1 votesHow tough is this class, really?
Tap an option to vote and see live results.
Study Tips
- 1
Make concept maps connecting topics — modern exam questions frequently cross unit boundaries.
- 2
Draw and label diagrams for every major process — reproducing them from memory is a powerful test of understanding.
- 3
Focus on explaining why things happen, not just what happens — exam questions reward cause-and-effect reasoning.
- 4
Past papers with mark schemes are the single best IB revision resource — learn exactly how marks are allocated.
- 5
Do not neglect your Internal Assessment: it is a significant chunk of your grade that you control before exam day.
Past Exam Questions
Define Systems & Models and state the key facts a student must know, using precise scientific terminology.
Explain the mechanism behind Ecosystems & Ecology: describe what happens and, crucially, why it happens. Include a labelled diagram where appropriate.
Design an experiment (or interpret given data) to investigate Biodiversity & Conservation. Identify the variables, describe the method, and explain how you would analyse the results.
Common Mistakes to Avoid
- ✕
Using vague everyday language where precise scientific terminology is required.
- ✕
Ignoring units and significant figures in calculations.
- ✕
Cramming content while neglecting experimental-design and data-analysis questions.
Official Resources
Free, official study material for IB Environmental Systems & Societies SL — always start with the source your exam board publishes.
Ask Sage · your AI tutor
Ask anything about IB Environmental Systems & Societies SL — or upload your notes.
Ask anything, or attach your notes / past questions and I'll tutor you on them.