ENVIRONMENTAL-SYSTEMS-AND-SOCIETIES · IB Diploma Programme
ENVIRONMENTAL-SYSTEMS-AND-SOCIETIES/11
(Case Study)
Environmental Systems and Societies · June 2024 · Variant 1
Relative difficulty
Analysis source: International Baccalaureate Organization
Analysis aligned to the official syllabus and assessment design.
3.2 / 5
100
180 min
Ecology, Ecosystem Dynamics and Conservation Management
Cohort performance
Session statistics from official examination reports
Total marks
100
Duration
180 min
Session difficulty
3.2 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
The May 2024 Standard Level Environmental Systems and Societies (ESS) examination set represents a highly balanced assessment of core curriculum themes.
With a difficulty index of 3.2 out of 5, the papers combined standard comprehension tasks with demanding evaluative and diagrammatic exercises.
Compare difficulty across recent years. Compare topic weight by year to spot recurring and returning areas.
Question difficulty map
How candidates performed on each question in this series
No data available in official reports
Assessment objectives
Skill and AO weighting from official examiner commentary
Skill weighting
Shows the skill mix this paper tested most heavily.
Analysis & I
Weight: 7100%Systems
Weight: 686%Modeling
Weight: 571%Evaluation of
Weight: 457%Theoretical Synthesis
Weight: 343%Environmental
Weight: 114%
Method marks watchlist
Where working, steps, or method marks were commonly lost
No data available in official reports
Recurring mistakes across years
Themes examiners flag in multiple recent sessions for this subject
No data available in official reports
Question choice intelligence
Mean scores and popularity for optional questions (HKDSE electives)
No data available in official reports
Level exemplars
What candidate scripts at each grade level looked like
No data available in official reports
Grade & admission context
How marks relate to grade thresholds and entry standards
Report type
IB subject report — grade distributions, IA weighting, and HL/SL distinctions
Level 7
Excellent — top band for competitive university offers
Level 6
Very good — strong HL performance
Level 5
Good — solid pass at higher level
Level 4
Satisfactory — minimum for many university credits
Level 3
Mediocre
Level 2
Poor
Level 1
Very poor
Deep insights
What top candidates did
Techniques and approaches examiners rewarded in this series
No data available in official reports
Command word playbook
How to match each command word to the expected response style
Match the expected response style for “Outline” questions.
Give reasons and link mechanism to outcome; each point needs a because/so chain.
Name or point to the specific feature asked for — avoid extra explanation.
State features in sequence or list observable properties — do not explain causes unless asked.
Show formula, substitution, and unit; method marks need visible working.
Weigh arguments for and against with evidence; end with a supported judgement.
Match the expected response style for “extent” questions.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.8
Min per mark: 1.7
Syllabus traceability
Topics linked to questions and mark weighting in this session
Ecology
43 marks this session
Biodiversity and conservation
17 marks this session
Human populations and urban systems
17 marks this session
Atmosphere and climate change
17 marks this session
MCQ trap analytics
Commonly chosen wrong options from examiner commentary
No data available in official reports
Topic heatmap across years
Mark concentration by topic and exam year for this subject
Mark intensity
Ecology
Atmosphere and climate change
Foundation - Perspectives, Systems, Sustainability (Syllabus content)
18.5 marksNatural resources (Syllabus content)
Biodiversity and conservation
Human populations and urban systems
Water
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1 (Case Study):
Paper 2 (Core & Structured Essays):
Marks you can still earn
Where valid approaches outside the mark scheme may still gain credit
No data available in official reports
Practise what examiners flagged
Target weak topics from this report inside the Revui app
Ecology
43 marks this session
Practise in RevuiBiodiversity and conservation
17 marks this session
Practise in RevuiHuman populations and urban systems
17 marks this session
Practise in RevuiAtmosphere and climate change
17 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
The May 2024 Standard Level Environmental Systems and Societies (ESS) examination set represents a highly balanced assessment of core curriculum themes.
- 2Message
With a difficulty index of 3.2 out of 5, the papers combined standard comprehension tasks with demanding evaluative and diagrammatic exercises.
- 3Message
Compare difficulty across recent years. Compare topic weight by year to spot recurring and returning areas.
Teacher briefing pack
One-page session summary for tutors and classroom review
June 2024 2024
Environmental Systems and Societies
The May 2024 Standard Level Environmental Systems and Societies (ESS) examination set represents a highly balanced assessment of core curriculum themes. With a difficulty index of 3.2 out of 5, the papers combined standard comprehension tasks with demanding evaluative and diagram
The May 2024 Standard Level Environmental Systems and Societies (ESS) examination set represents a highly balanced assessment of core curriculum themes.
With a difficulty index of 3.2 out of 5, the papers combined standard comprehension tasks with demanding evaluative and diagrammatic exercises.
Compare difficulty across recent years. Compare topic weight by year to spot recurring and returning areas.
- Total marks
- 100
- Duration
- 180 min
- Session difficulty
- 3.2 / 5
Session analysis
The May 2024 Standard Level Environmental Systems and Societies (ESS) examination set represents a highly balanced assessment of core curriculum themes. With a difficulty index of 3.2 out of 5, the papers combined standard comprehension tasks with demanding evaluative and diagrammatic exercises.
Updated Jun 14, 2026
Paper breakdown
Paper 1 (Case Study):
Paper 2 (Core & Structured Essays):
Top chapters
Exam structure insights
Marks by chapter
See where the marks were concentrated so revision time goes to the highest-value topics.
Mark accessibility
Estimate which marks were basic, mid-level, or high-difficulty.
71% within easy or medium reach
Command word frequency
Spot common command words so answers match the expected response style.
Question type mix
Compare the mark share of each paper section and question type.
Structured Essay
(Section B & P1 Q7)
86·5·61%
Short Answer
(Structured)
54·25·39%
Study ROI
Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.
Difficulty trend
Compare difficulty across recent years.
Time vs marks
Compare marks with suggested time allocation to plan exam pacing.
Paper 1 Extended Es
0.60 m/minPaper 2 Section A
0.56 m/minTotal marks
31
Total time
55 min
Avg pace
0.56
Cumulative marks ladder
The line is your running mark total question by question; dashed lines are the estimated grade cut-offs. See which question the line crosses your target grade at, so you know how far you must answer cleanly and which questions decide a band.
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Water Security and Desalination
85%85%
Soil Systems and Conservation
80%80%
May 2024 ESS SL Exam Analysis
The May 2024 Standard Level Environmental Systems and Societies (ESS) examination set represents a highly balanced assessment of core curriculum themes. With a difficulty index of 3.2 out of 5, the papers combined standard comprehension tasks with demanding evaluative and diagrammatic exercises.
Exam tips
Paper format
- Duration
- 1h
- Total marks
- 35
- Weighting
- 35%
- Question types
- Data interpretation & Calculations, Short Outline / Suggestion / Explanation, Extended Evaluation, Synthesised Discussion Essay
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.