ISC Class 12 Syllabus 2025-2026: Download PDF, Check Weightage, Marking Scheme & Important Topics

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Sahaj Anand

Content Writer | Journalism Graduate | Updated on - Sep 18, 2025

The ISC Class 12 Syllabus 2025-2026 has been released by CISCE, with changes in around 10 subjects including Physics, Chemistry, Mathematics, Biology, Accountancy, Geography, History, Political Science, Legal Studies & Psychology.

In the ISC Class 12 Syllabus, English and Economics are the same, which ensures consistency in language & commerce subjects.

  • According to the ISC Class 12 Exam Pattern, theory exams are worth 80 marks, and an additional 20 marks are allocated for practical/internal assessment.
  • In the ISC Class 12 Syllabus, the science subject follows a pattern of 70 marks for the theory exam and 30 marks for the practical exam, while mathematics carries the entire 100 marks for the theory exam.
  • In Physics, the practicals carry 15 marks for experiments and 10 marks for the project work, whereas in business studies, 20 marks will be given to reports and case studies.

You can download the ISC Class 12 subject-wise syllabus PDF from the CISCE official website cisceboard.org, under the section of “Regulations & Syllabuses”, including the total questions, marks in each section & weightage.

ISC Class 12 Syllabus

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ISC Exam Pattern

Key Summary

  • The ISC Class 12 Syllabus 2026 has been released by CISCE.
  • In the ISC Class 12 Syllabus, there are changes in Physics, Chemistry, Mathematics, Biology, Accountancy, Geography, History, Political Science, Legal Studies & Psychology.
  • The ISC Class 12 Exam follows a format of 80 marks for the theory exam in most subjects and 20 marks for the internal assessment.
Table of Contents
  1. What is the ISC Class 12 Syllabus?
  2. ISC Class 12 Syllabus 2025-26: PDF Download
  3. ISC Class 12 Syllabus 2026: Subject-wise

    3.1 ISC Class 12 Syllabus 2026: Physics

    3.2 ISC Class 12 Syllabus 2026: Chemistry

    3.3 ISC Class 12 Syllabus 2026: Mathematics

    3.4 ISC Class 12 Syllabus 2026: Biology

    3.5 ISC Class 12 Syllabus 2026: Accounts

    3.6 ISC Class 12 Syllabus 2026: History

    3.7 ISC Class 12 Syllabus 2026: English (Compulsory)

    3.8 ISC Class 12 Syllabus 2026: Physics

    3.9 ISC Class 12 Syllabus 2026: Chemistry

    3.10 ISC Class 12 Syllabus 2026: Mathematics

    3.11 ISC Class 12 Syllabus 2026: Biology

    3.12 ISC Class 12 Syllabus 2026: Accounts

    3.13 ISC Class 12 Syllabus 2026: History

    3.14 ISC Class 12 Syllabus 2026: Geography

    3.15 ISC Class 12 Syllabus 2026: Political Science

    3.16 ISC Class 12 Syllabus 2026: Legal Studies

    3.17 ISC Class 12 Syllabus 2026: Psychology

  4. ISC Class 12 Syllabus: Practical
  5. ISC Class 12 Syllabus: Weightage & Marking Scheme
  6. ISC Class 12 Syllabus: Important Topics
  7. FAQs for ISC Class 12 Syllabus

What is the ISC Class 12 Syllabus?

The ISC Class 12 Syllabus is released by CISCE, including the topics, chapters, marking scheme, weightage & internal/project requirements for subjects like science, commerce & humanities.

The ISC Class 12 Syllabus 2026 has been revised for subjects like physics, chemistry, biology, mathematics, accounts and history, whereas English and economics are the same.

Component Details
Conducting Body Council for the Indian School Certificate Examinations (CISCE)
Applicable Session Academic Year 2025–26, Exam in 2026
Streams Covered Science, Commerce, Humanities/Arts
Revised Subjects (2026) Physics, Chemistry, Mathematics, Biology, Accounts, History, Geography, Political Science, Legal Studies, Psychology
Unchanged Subjects English, Economics (and some others)
Marking Scheme
  • Science: 70 (Theory) + 30 (Practical/Project)
  • Non-Science: 80 (Theory) + 20 (Project) Maths: 100 (Theory)
Evaluation Components Theory exams, Practical/Project work, Internal assessment
Exam Duration 3 Hours for most subjects
Total Marks Usually 100 per subject
Syllabus Format Unit-wise chapters, course structure, project guidelines, and evaluation criteria
Official Source CISCE Website”cisceboard.org”: Regulations & Syllabuses Section
ISC Class 12 Syllabus

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ISC Class 12 Passing Marks

ISC Class 12 Syllabus 2025-26: PDF Download

CISCE has revised the syllabus of 12 subjects for the session 2025-26. You can download the revised ISC Class 12 Syllabus 2025-26 PDF from the links provided in the table below:

Subjects Syllabus PDF
Physics Download Here
Chemistry Download Here
Biology Download Here
Mathematics Download Here
History Download Here
Political Science Download Here
Geography Download Here
Sociology Download Here
Psychology Download Here
Commerce Download Here
Accounts Download Here
Legal Studies Download Here

The syllabus of the following subjects has NOT been changed:

Subjects Syllabus PDF
English Download Here
Indian Languages Download Here
Modern Foreign Languages Download Here
Classical Languages Download Here
Elective English Download Here
Economics Download Here
Business Studies Download Here
Home Science Download Here
Fashion Designing Download Here
Electricity and Electronics Download Here
Engineering Science Download Here
Geometrical and Mechanical Drawing Download Here
Geometrical and Building Drawing Download Here
Art Download Here
Music Download Here
Physical Education Download Here
Environmental Science Download Here
Computer Science Download Here
Biotechnology Download Here
Mass Media & Communication Download Here
Hospitality Management Download Here

Also Read

ISC Class 12 Grading System

ISC Class 12 Syllabus 2026: Subject-wise

The ISC Class 12 syllabus will include candidates' requirements for each subject for the board exam, including all topics, internal & practical work. Distribution of marks in each subject. Candidates can plan, practice and focus on high-weightage topics as per the ISC Class 12 Syllabus.

ISC Class 12 Syllabus 2026: Physics

Unit Sub-Topics
Electrostatics Electric charges and fields, Coulomb’s law, Electric dipole, Electric flux, Gauss’ theorem and its applications, Electric potential and potential energy, Capacitance, Dielectrics.
Current Electricity Electric current, Drift velocity, Ohm’s law, Electrical resistivity, Combination of resistors, Cells in series/parallel, Kirchhoff’s laws, Wheatstone bridge, Meter bridge, Potentiometer.
Magnetic Effects of Current & Magnetism Biot-Savart law, Ampere’s circuital law, Force on current-carrying conductors, Moving coil galvanometer, Magnetic dipole, Earth’s magnetism, Magnetic properties of materials.
Electromagnetic Induction & Alternating Current Faraday’s and Lenz’s laws, Self and mutual induction, Eddy currents, Alternating currents, LCR circuits, Transformers, Power transmission.
Electromagnetic Waves Characteristics of EM waves, Displacement current, Electromagnetic spectrum.
Optics Reflection, Refraction, Lenses, Prisms, Optical instruments (microscope, telescope), Wave optics, Interference, Diffraction, Polarisation.
Dual Nature of Matter & Radiation Photoelectric effect, Wave-particle duality, de Broglie hypothesis, Davisson-Germer experiment.
Atoms & Nuclei Atomic models, Hydrogen spectrum, Radioactivity, Nuclear fission and fusion.
Electronic Devices Semiconductors, Diodes, Junction transistors, Logic gates.

ISC Class 12 Syllabus 2026: Chemistry

Unit Sub-Topics
Solid State Types of solids, Crystal lattices, Unit cells, Packing efficiency, Defects in solids.
Solutions Concentration terms, Raoult’s law, Colligative properties, Abnormal molar masses.
Electrochemistry Electrochemical cells, Nernst equation, Electrolysis, Conductivity.
Chemical Kinetics Rate of reaction, Order and molecularity, Integrated rate equations, Arrhenius equation.
Surface Chemistry Adsorption, Catalysis, Colloids, Emulsions.
General Principles & Processes of Isolation Metallurgy, Extraction principles.
p-Block Element (Group 15, 16, 17, 18) Properties, Compounds of N, P, O, S, Halogens, Noble gases.
d-Block Elements (Transition) Properties, Compounds, Alloys.
f-Block Elements (Lanthanides, Actinides) Characteristics, Uses.
Coordination Compounds Ligands, Nomenclature, Bonding theories.
Haloalkanes & Haloarenes Nomenclature, Preparation, Properties, Mechanisms.
Alcohols, Phenols, Ethers Structures, Reactions, Uses.
Aldehydes, Ketones, Carboxylic Acids Preparation, Properties, Reactions.
Amines Classification, Preparation, Properties.
Biomolecules Carbohydrates, Proteins, Vitamins, Nucleic acids.
Polymers Types, Preparation, Uses.
Chemistry in Everyday Life Drugs, cleansing agents, and Applications.

ISC Class 12 Syllabus 2026: Mathematics

Unit Sub-Topics
Relations & Functions Types of relations, Functions, Inverse trigonometric functions.
Algebra Matrices, Determinants, Solution of linear equations.
Calculus Continuity, Differentiability, Differentiation, Applications of derivatives, Integrals, Definite integrals, Applications of integrals, Differential equations.
Vectors Vector algebra, Scalar & vector products.
3D Geometry Direction cosines, Equations of line and plane, Angle between planes/lines.
Linear Programming Formulation, Graphical solutions, Optimal solutions.
Probability Conditional probability, Bayes’ theorem, Random variables, Probability distributions.
Statistics Measures of dispersion, Regression, Correlation.

ISC Class 12 Syllabus 2026: Biology

Unit Sub-Topics
Reproduction Reproduction in organisms, Sexual reproduction in flowering plants, Human reproduction, Reproductive health.
Genetics & Evolution Mendelian genetics, Chromosomal theory, Molecular basis of inheritance, and Evolution theories.
Biology & Human Welfare Human diseases, Immunity, and Microbes in human welfare.
Biotechnology Principles, Processes, Applications.
Ecology & Environment Organisms and environment, Ecosystem, Biodiversity, Environmental issues.

ISC Class 12 Syllabus 2026: Accounts

Unit Sub-Topics
Partnership Accounts Fundamentals, Goodwill, Change in profit-sharing ratio, Admission, Retirement, Death of a partner, Dissolution.
Company Accounts Issue of shares, Forfeiture & reissue, Issue of debentures, Redemption of debentures.
Not-for-Profit Organisations Accounts of clubs, schools, and other non-profit entities.
Financial Statement Analysis Comparative statements, Common size statements, Ratio analysis, Cash flow statement.

ISC Class 12 Syllabus 2026: History

Unit Sub-Topics
Growth of Nationalism Factors promoting nationalism, Early nationalist leaders, Indian National Congress.
Emergence of the Colonial Economy Agriculture, Industries, Railways, Trade.
Social & Religious Reform Movements Brahmo Samaj, Arya Samaj, Aligarh Movement, Others.
Gandhian Era Non-cooperation, Civil disobedience, Quit India Movement.
Partition & Independence Mountbatten Plan, Partition of India, Integration of princely states.
Contemporary World UN, Cold War, Non-Aligned Movement, Disarmament, Human Rights, Globalisation.

ISC Class 12 Syllabus 2026: English (Compulsory)

Paper 1: English Language

Unit Subtopics
Functional Grammar Transformation of sentences, Correct usage, Prepositions, Vocabulary in context
Comprehension Unseen passages with questions based on content, vocabulary, and inference
Composition Essays (narrative, descriptive, argumentative, reflective, short story)
Directed Writing Report writing, Proposal writing, Article, Speech, Review, Letter writing

Paper 2: English Literature

Unit Subtopics
Drama The Tempest (Shakespeare)
Poetry Prescribed poems from the Golden Treasury / other anthology by CISCE
Prose Prescribed short stories/novel

ISC Class 12 Syllabus 2026: Physics

Unit Subtopics
Electrostatics Electric charges & fields, Gauss’s Law, Capacitance
Current Electricity Ohm’s Law, Circuits, Kirchhoff’s laws, Potentiometer, Wheatstone bridge
Magnetism Magnetic fields, Earth’s magnetism, Magnetic properties of materials
Electromagnetic Induction Faraday’s law, Lenz’s law, Inductance, Alternating current
Optics Ray optics, Wave optics, Interference, Diffraction, Polarisation
Modern Physics Dual nature of matter, Atoms, Nuclei, Radioactivity, Semiconductors
Practical Work Experiments, Project Work, Viva

ISC Class 12 Syllabus 2026: Chemistry

Unit Subtopics
Solid State Crystal lattices, Unit cell, Packing efficiency
Solutions Concentration, Raoult’s Law, Colligative properties
Electrochemistry Redox reactions, Conductance, Nernst equation
Chemical Kinetics Rate law, Order of reaction, Arrhenius equation
Surface Chemistry Adsorption, Colloids, Catalysis
Organic Chemistry Aldehydes, Ketones, Carboxylic acids, Amines, Biomolecules
Inorganic Chemistry Coordination compounds, p-block, d-block & f-block elements
Practical Work Qualitative analysis, Titrations, Project

ISC Class 12 Syllabus 2026: Mathematics

Unit Subtopics
Algebra Relations & Functions, Inverse Trigonometric Functions, Matrices, Determinants
Calculus Continuity & Differentiability, Applications of Derivatives, Integrals, Differential equations
Vectors & 3D Vector algebra, 3D geometry (planes, lines, distance, angles)
Probability & Statistics Probability distribution, Variance, Bayes’ theorem
Linear Programming LPP and solutions using the graphical method

ISC Class 12 Syllabus 2026: Biology

Unit Subtopics
Reproduction Sexual reproduction in flowering plants, Human reproduction, Reproductive health
Genetics & Evolution Principles of inheritance, Molecular basis, Evolution
Biology in Human Welfare Human health, Diseases, Strategies for food production
Biotechnology Principles, Processes, Applications
Ecology Ecosystem, Biodiversity, Environmental issues
Practical Work Experiments, Project, Spotting, Record work

ISC Class 12 Syllabus 2026: Accounts

Unit Subtopics
Partnership Accounts Fundamentals, Reconstitution, Dissolution
Company Accounts Issue of shares/debentures, Redemption, Final accounts
Financial Statement Analysis Comparative, Common size, Ratio analysis, Cash Flow Statement
Non-Profit Organizations Accounts of NPOs
Computerized Accounting Concepts, Features, Applications

ISC Class 12 Syllabus 2026: History

Unit Subtopics
Growth of Nationalism Moderates, Extremists, Gandhian era
Emergence of the Colonial Economy Land revenue systems, Railways, Trade
World Affairs World Wars, Cold War, UNO, NAM
Contemporary Issues Human rights, Globalisation

ISC Class 12 Syllabus 2026: Geography

Unit Subtopics
Physical Geography Landforms, Climate, Soils, Natural Hazards
Human Geography Population, Migration, Settlements
Economic Geography Agriculture, Minerals, Industries, Transport
Map Work Topographical maps, Practical cartography

ISC Class 12 Syllabus 2026: Political Science

Unit Subtopics
Indian Constitution Fundamental Rights, Directive Principles, Amendments
Indian Politics Party system, Federalism, Elections, Judiciary
International Relations UN, WTO, EU, SAARC, Global issues

ISC Class 12 Syllabus 2026: Legal Studies

Unit Subtopics
Theory & Nature of Political Institutions Law, State, Sovereignty
Historical Evolution of the Indian Legal System British legacy, Constitution
Nature of Legal Practices Lawyers, Judges, Legal professionals
Human Rights in India Fundamental Rights, RTI, PIL

ISC Class 12 Syllabus 2026: Psychology

Unit Subtopics
Intelligence & Aptitude IQ, Emotional intelligence, Tests
Personality Traits, Theories, Assessment
Social Psychology Attitude, Prejudice, Group dynamics
Psychological Disorders Anxiety, Depression, Schizophrenia
Therapeutic Approaches Counselling, Psychotherapy

ISC Class 12 Syllabus: Practical

The ISC Class 12 Practical syllabus will strengthen the candidates' conceptual clarity and experimental learning.

  • The Science subjects like Physics, Chemistry, & biology will emphasise the laboratory experiments, whereas accounts, business studies, geography and psychology focus on projects, fieldwork and case studies.
  • The Practical syllabus includes experiments, records, viva and project submission, which ensure that students will apply theoretical knowledge in real-life scenarios.

ISC Class 12 Practical Syllabus

Subject Practical / Project Focus Areas
Physics Experiments (optics, electricity, magnetism), lab records, viva
Chemistry Titrations, salt analysis, organic tests, records, viva
Biology Spotting, slide prep, enzyme/osmosis experiments, project, viva
Mathematics Project work (modelling, statistics, graph-based analysis)
Accounts Financial statement/project, ratio & cash flow analysis
Business Studies Case study, field survey, business project report
Economics Statistical project, data analysis with graphs & correlation
Geography Map work, field survey, cartography project
Computer Science Programming (Java/Python), project file, viva
Psychology Experiments (memory, aptitude, learning), project/case study
Environmental Education Field-based environmental project/report

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ISC Class 12 Preparation Tips

ISC Class 12 Syllabus: Weightage & Marking Scheme

The ISC Class 12 Syllabus 2026 will follow a proper evaluation pattern in which most of the theory subjects will be of 80 marks each, and the practical/project work will carry 20 marks each.

This Equal distribution of marks will ensure that the students will cover both conceptual knowledge and application skills.

Subject Theory Marks Practical / Project Marks Total
English 100 100
Physics 70 30 100
Chemistry 70 30 100
Biology 70 30 100
Mathematics 80 20 (Project) 100
Accounts 80 20 (Project) 100
Business Studies 80 20 (Project/Case study) 100
Economics 80 20 (Project/Fieldwork) 100
History 80 20 (Project) 100
Political Science 80 20 (Project) 100
Geography 70 30 (Practical & Fieldwork) 100
Computer Science 70 30 (Practical/Project) 100
Psychology 70 30 (Practical/Case study) 100
Environmental Education 100 (Project-based) 100

ISC Class 12 Syllabus: Important Topics

The ISC Class 12 Syllabus will include high-weightage topics and frequently asked topics in all subjects. The ISC Class 12 Important Topics cover the board exam questions and are important for scoring well.

By focusing on the important topics, candidates can increase their preparation, balance both theory along application, and maximise their overall performance.

Subject Important Topics
Physics Electrostatics, Current Electricity, Magnetism, Optics, Modern Physics
Chemistry Electrochemistry, Chemical Kinetics, Organic Chemistry (Aldehydes, Amines), Coordination Compounds
Biology Genetics, Evolution, Human Reproduction, Biotechnology, Ecology
Mathematics Calculus, Probability, Vectors & 3D Geometry, Matrices & Determinants
Accounts Partnership Accounts, Company Accounts, Financial Statement Analysis
Business Studies Principles of Management, Marketing, Business Environment
Economics National Income, Money & Banking, Government Budget, Indian Economy
History National Movement, World Wars, Cold War, Contemporary Issues
Political Science Indian Constitution, Federalism, Party System, International Relations
Geography Population, Resources, Agriculture, Industries, Map Work
Computer Science Programming (Java/Python), Data Structures, Database Management
Psychology Intelligence, Personality, Social Psychology, Psychological Disorders

FAQs for ISC Class 12 Syllabus

Ques. Is the Class 12 2025–26 syllabus released?

Ans. For the year 2025-2026, CISCE has released the complete subject-wise syllabus along with the practical/project-based requirements.

In subjects like Physics, Chemistry, Mathematics, Biology, Accounts and Geography, some changes have been made, whereas the other subjects remain the same.

Detail Information
Board CISCE
Academic Session 2025–26
Release Status Released
Mode of Access PDF on CISCE official website
Subjects Revised Physics, Chemistry, Accounts, Geography, etc.
Subjects Unchanged English, Economics

Ques. Is 80% good in Class 12 ISC?

Ans. In the ISC Class 12 Exam, a score of 80% is considered an above-average and respectable score in both Indian and foreign universities.

  • 80% – First division and competitive for most UG courses.
  • Universities in India & abroad consider 80% a strong academic performance.

Ques. Is ISC very difficult?

Ans. The ISC Exam is more detailed as compared to other board exams. The ISC syllabus focuses on application-based questions, answers, and practical work.

The ISC Exams are not easy, and candidates should prepare in a proper, systematic way.

Factor Analysis
Syllabus Depth More comprehensive than many boards
Evaluation Strict but balanced
Practical Work Essential in Science & Commerce streams
Verdict Challenging but manageable with consistent study

Ques. Is it easy to get 90% in ISC?

Ans. For achieving 90% in ISC, a focused study plan is required, as the syllabus is vast and application-based. Candidates should practice a structured writing style, solve previous year question papers, and prioritise the high-weightage topics as well.

To score more than 90%, candidates should:

  • Target high-weightage chapters first.
  • Practice past 10-year board papers.
  • Use flowcharts, headings, and keywords in answers.
  • Balance theory revision with practical/project work.

Ques. Is ISC enough for JEE?

Ans. The ISC syllabus includes conceptual understanding in Physics, Chemistry & Mathematics, but the JEE depends more on problem-solving and application skills.

Aspect ISC Syllabus Coverage
Physics Covers NCERT-level topics, but JEE requires advanced problem-solving
Chemistry Organic & Physical overlap, but JEE asks higher-level numerical questions
Mathematics Similar concepts, but the JEE level is tougher
Verdict The ISC syllabus is good for foundation, but extra JEE-specific preparation is necessary

*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College.

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