The Council for the Indian School Certificate Examinations (CISCE) has released the Environmental Science syllabus for Class 12 in the 2026-27 academic session (Exam Year 2027). The subject, coded 877, is a vital component of the ISC curriculum that bridges ecological science and environmental management. Students preparing for the board examination should familiarize themselves with the complete syllabus structure, exam pattern, and project work requirements.
Overview
The ISC Class 12 Environmental Science syllabus is designed to provide students with comprehensive knowledge of environmental systems, conservation strategies, and sustainable development practices. The course combines theoretical understanding with practical fieldwork and project-based learning, encouraging students to engage with real-world environmental issues. The examination assesses knowledge across seven thematic units covering natural ecosystems, human development, and global environmental governance.
Exam Pattern and Marks Distribution
| Paper | Component | Duration | Marks |
|---|---|---|---|
| Paper I | Theory | 3 Hours | 70 |
| Paper II | Practical/Project Work | As per project requirements | 30 |
| Total | Theory and Project | – | 100 |
Syllabus Units and Sections
The Environmental Science syllabus is organized into seven units across three sections:
| Section | Unit | Unit Name |
|---|---|---|
| A | 1 | Human Beings and Nature |
| A | 2 | Population and Conservation Ecology |
| A | 3 | Monitoring Pollution |
| B | 4 | Third World Development |
| B | 5 | Sustainable Agriculture |
| C | 6 | Environmental and Natural Resource Economics |
| C | 7 | International Relations and the Environment |
Section A covers fundamental ecological concepts, population dynamics, and environmental monitoring techniques. Section B addresses development challenges in developing nations and agricultural sustainability. Section C explores economic perspectives on environmental management and global environmental cooperation frameworks.
Project Work (Paper II – 30 Marks)
Students must complete one of five project options. The practical component accounts for 30 marks and requires students to conduct field-based investigations, data collection, and analysis.
| Project Option | Requirements |
|---|---|
| Study of a Current Environmental Problem | Investigate an environmental issue using available information and primary data, and propose possible solutions. |
| Environmental Impact Assessment | Design and carry out an environmental impact assessment, including relevant data collection and analysis. |
| Monitoring a Local Environmental Issue | Monitor a selected environmental issue for at least six months using scientific methods and numerical data. |
| Fieldwork or Training | Complete at least one month of fieldwork or training with a relevant environmental organisation and prepare a report. |
| Plant Population Study | Study plant population and density in a selected area using the quadrat method. |
How to Access the Syllabus
- Visit the official CISCE website
- Navigate to the syllabus or curriculum section for ISC Class 12
- Search for Environmental Science (Subject Code 877) Syllabus for 2026-27
- Download the complete PDF document
- Review all seven units and understand the weightage of each section
- Plan your study strategy based on the exam pattern (70 marks theory, 30 marks project)
- Select and finalize your project option early to allow adequate time for completion
Important Information
The Environmental Science curriculum emphasizes experiential learning and critical thinking. Students are expected to engage with contemporary environmental challenges and develop evidence-based solutions. The six-month monitoring project option and month-long fieldwork option provide opportunities for deep engagement with environmental systems. All project work must be completed and submitted before the board examination date.
Important Links
Frequently Asked Questions
Q: What is the total marks for ISC Class 12 Environmental Science?
A: The total marks is 100, divided into Paper I (Theory) worth 70 marks and Paper II (Practical/Project Work) worth 30 marks.
Q: What is the subject code for Environmental Science in ISC Class 12?
A: The subject code is 877.
Q: How long is the theory examination for Environmental Science?
A: The theory examination (Paper I) has a duration of 3 hours.
Q: What are the project options available for Environmental Science practical work?
A: Students can choose from five options: Study of a Current Environmental Problem, Environmental Impact Assessment, Monitoring a Local Environmental Issue, Fieldwork or Training, or Plant Population Study.
Q: How many units are covered in the ISC Environmental Science syllabus?
A: The syllabus covers 7 units divided into three sections: Section A (3 units), Section B (2 units), and Section C (2 units), covering topics from Human Beings and Nature to International Relations and the Environment.
Disclaimer: Students must verify all syllabus details and project requirements on the official CISCE website before finalizing their study and project plans.