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About IB Environmental Systems and Societies Exam
About IB ESS Exam
Available at standard (SL) and higher levels (HL). Students are assessed both externally and internally.The distinction between SL and HL is one of breadth and depth.
IB Environmental Systems and Societies Grades
There is no negative marking and no points are awarded for unanswered questions.
| IB ESS Grades | Definition | IB equivalency |
|---|---|---|
| A | 96-100 | 7 |
| A | 92-95.9 | 6 |
| A- | 84-91.9 | 5 |
| B+ | 76-83.9 | 4 |
| B | 68-75.9 | 3 |
| C | 60-67.9 | 2 |
| D | 52-59.9 | 1 |
| F | 0-51.9 |
IB ESS Exam Calculator Policy
You are allowed to use a four-function, scientific, or graphing calculator on the entire IB ESS Exam–including both the multiple-choice and free response sections.
External Assessment Overview
All students will only sit two external examinations.
Paper 1 Students will analyze and evaluate data from an unfamiliar case study presented in various formats. All questions must be answered.
Paper 2A Includes short-answer and data-response questions.
Paper 2B Involves structured essay questions with limited choice.
External Assessment Total Weightage
SL- 75% & HL- 80%
Paper 1- 25% & Paper 2- 50%(SL)
Paper 1- 30% & Paper 2- 50%(HL)
Internal Assessment Total Weightage
SL- 25% & HL- 20%
Course Curriculum
1.1 Perspectives
1.2 Systems
1.3 Sustainability
2.1 Individuals, populations, communities, and ecosystems
2.2 Energy and biomass in ecosystems
2.3 Biogeochemical cycles
2.4 Climate and biomes
2.5 Zonation, succession and change in ecosystems
3.1 Biodiversity and evolution
3.2 Human impact on biodiversity
3.3 Conservation and regeneration
4.1 Water systems
4.2 Water access, use and security
4.3 Aquatic food production systems
4.4 Water pollution
5.1 Soil
5.2 Agriculture and food
6.1 Introduction to the atmosphere
6.2 Climate change — causes and impacts
6.3 Climate change — mitigation and adaptation
6.4 Stratospheric ozone
7.1 Natural resources — uses and management
7.2 Energy sources — uses and management
7.3 Solid waste
8.1 Human populations
8.2 Urban systems and urban planning
8.3 Urban air pollution
9.1 Environmental laws
9.2 Environmental and ecological economics
9.3 Environmental ethics
