Tamil Nadu Board of Higher Secondary Education Syllabus 2027
Tamil Nadu Board of Higher Secondary Education Syllabus
TN 12th Syllabus 2025-26 Overview
The Tamil Nadu Directorate of Government Examinations (TNDGE) conducts the Class 12th exam every year in March. The syllabus is available for three streams: Science, Commerce, and Arts (Humanities).
- The Class 12th exam syllabus in Tamil Nadu is also called the Higher Secondary syllabus.
- As per the Tamil Nadu Class 12th Exam Pattern 2026, the total marks allotted for all six subjects are 600.
Tamil Nadu Class 12th Syllabus: Key Details
| Particulars | Details |
|---|---|
| Board Name | Tamil Nadu Directorate of Government Examinations (TNDGE) |
| Class | 12th/HSC (Higher Secondary Certificate) |
| Academic Year | 2025-26 |
| Subjects | English, Tamil, Mathematics, Physics, Chemistry, Biology, Commerce, Economics, History, etc. |
| Total Marks | 600 (for six subjects) |
| Passing Marks | 35% in each subject |
| Exam Duration | 3 Hours per subject |
| Exam Mode | Offline (Pen and Paper) |
Syllabus Alignment and Key Points
The Tamil Nadu Class 12th syllabus aligns with NEP 2020 and national academic standards. It focuses on conceptual understanding and skill-based learning in all subjects.
- The syllabus covers important topics, marking scheme, and exam pattern for all three streams: Science, Commerce, and Arts.
- TNDGE will soon release the Class 12 Tamil Nadu Board syllabus PDF 2026 on its official website.
- The TN Class 12th Time Table 2026 is expected to be released in October 2025.
- The exam duration for the TN HSC Class 12th Exam 2026 will be the same as last year: 3 hours (from 10 am to 1:15 pm with some exceptions).
- The question paper for each subject will be available in both Tamil and English medium.
Marking Scheme and Exam Pattern
Each subject will be worth 100 marks, comprising Theory, Practical, and Internal Assessment for most papers. Some subjects do not include practicals or internal assessments.
- Subjects such as Mathematics, English, Commerce, Economics, and History do not include practicals or internal assessments.
- There will be four sections in the theory paper of each subject.
- The sections include multiple-choice, short, long, and very long type questions.
Syllabus Revisions for 2025-26
TNDGE has updated several chapters and subtopics to focus more on competency-based learning. Some outdated or overlapping portions have been reduced to improve focus on critical concepts.
- Revisions have been made especially in Physics, Chemistry, Biology, and Accountancy.
- The syllabus is based on the Samacheer Kalvi system.
- This year's syllabus includes updated topics from Science, Commerce, and Arts Streams.
Where to Download the TN 12th Syllabus 2025-26 PDF
Students can download the official syllabus PDF from the Tamil Nadu DGE official website (www.dge.tn.gov.in) or through the State Council of Educational Research and Training (SCERT Tamil Nadu) portal.
The syllabus PDFs are available subject-wise and stream-wise (Science, Commerce, Arts).
TN 12th Syllabus 2025-26: Subject-wise
The subjects included in the Tamil Nadu HSC Class 12th syllabus are Tamil, English Language, Mathematics, Physics, Biology, Chemistry, and Computer Science.
The subject-wise syllabus of the TN Class 12th exam is provided below.
TN 12th Syllabus 2025-26 for English
Students preparing for the TN Class 12th exam 2026 must check the English syllabus given below.
| Units | Topics Covered |
|---|---|
| Prose | The Portrait of a Lady, A Roadside Stand, On the Rule of the Road, The Status of Women in India |
| Poetry | A Palm of Life, A Poison Tree, The Hollow Crown, Migrant Bird |
| Supplementary | The First Patient, The Chair, The Edge |
| Grammar | Transformation of Sentences, Reported Speech, Clauses |
| Writing Skills | Essay Writing, Letter Writing, Reported Writing, Comprehension |
TN 12th Syllabus 2025-26 for Mathematics
There are eight units in Mathematics covered in the Tamil Nadu HSC Class 12th syllabus 2026.
| Units | Topics Covered |
|---|---|
| Unit I | Relations and Functions |
| Unit II | Inverse Trigonometric Functions |
| Unit III | Matrices and Determinants |
| Unit IV | Calculus (Limits, Derivatives, Integrals) |
| Unit V | Differential Equations |
| Unit VI | Vector Algebra |
| Unit VII | Probability Distributions |
| Unit VIII | Linear Programming |
TN 12th Syllabus 2025-26 for Physics
Ten units are included in the Tamil Nadu HSC Class 12th syllabus 2026 for Physics.
| Units | Topics Covered |
|---|---|
| Unit I | Electrostatics |
| Unit II | Current Electricity |
| Unit III | Magnetic Effects of Electric Current and Magnetism |
| Unit IV | Electromagnetic Induction and Alternating Current |
| Unit V | Electromagnetic Waves |
| Unit VI | Optics |
| Unit VII | Dual Nature of Radiation and Matter |
| Unit VIII | Atoms and Nuclei |
| Unit IX | Semiconductor Electronics |
| Unit X | Communication |
TN 12th Syllabus 2025-26 for Chemistry
Students appearing for the Tamil Nadu HSC Class 12th exam 2026 must check the Chemistry syllabus given below.
| Units | Topics Covered |
|---|---|
| Unit I | Solid State |
| Unit II | Solutions |
| Unit III | Electrochemistry |
| Unit IV | Chemical Kinetics |
| Unit V | Surface Chemistry |
| Unit VI | Coordination Compounds |
| Unit VII | Haloalkanes and Haloarenes |
| Unit VIII | Alcohols, Phenols, and Ethers |
| Unit IX | Biomolecules |
| Unit X | Polymers and Chemistry in Everyday Life |
TN 12th Syllabus 2025-26 for Commerce
Students from the commerce stream must cover the eight units in the Tamil Nadu HSC Class 12th syllabus.
| Units | Topics Covered |
|---|---|
| Unit I | Principles of Management |
| Unit II | Business Environment |
| Unit III | Planning and Decision Making |
| Unit IV | Organising and Staffing |
| Unit V | Directing and Controlling |
| Unit VI | Financial Management |
| Unit VII | Marketing Management |
| Unit VIII | Entrepreneurship Development |
TN 12th Syllabus 2025-26 for Economics
Students from the Arts stream must check the detailed Tamil Nadu HSC Class 12th exam Economics syllabus given below.
TN 12th Syllabus 2025-26 for Economics
The Tamil Nadu HSC Class 12th Economics syllabus is divided into eight units. The table below lists the topics covered in each unit.
| Units | Topics Covered |
|---|---|
| Unit I | Introduction to Microeconomics |
| Unit II | Consumer Behavior |
| Unit III | Producer Behavior and Supply |
| Unit IV | Market Structures |
| Unit V | National Income and Related Aggregates |
| Unit VI | Money, Banking, and Inflation |
| Unit VII | Government Budget and Fiscal Policy |
| Unit VIII | International Trade and Balance of Payments |
TN 12th Syllabus 2025-26 for History
The Tamil Nadu HSC Class 12th History syllabus is divided into eight units. The table below lists the topics covered in each unit.
| Units | Topics Covered |
|---|---|
| Unit I | Early Societies and Civilizations |
| Unit II | Medieval India and Regional Kingdoms |
| Unit III | The Mughal Empire |
| Unit IV | British Rule in India |
| Unit V | Indian National Movement |
| Unit VI | Post-Independence India |
| Unit VII | World Wars and Global Developments |
| Unit VIII | Contemporary World and Globalization |
Tamil Nadu Class 12 Subject-wise Weightage FAQs
What is the weightage distribution in Tamil Nadu 12th Science subjects?
In Physics and Chemistry, each unit carries around 6–10 marks. Biology has equal weightage for Botany and Zoology sections, with each section carrying 35 marks.
In Mathematics, topics like Calculus and Algebra have the highest weightage at 25–30%.
How is the weightage distributed in the Commerce stream subjects?
- Accountancy: Partnership & Company Accounts (40–45%), Financial Statement (20%)
- Economics: National Income, Monetary Policy, and Public Finance (60%)
- Business Studies: Principles of Management, Marketing, and Business Environment (50%)
Does Tamil Nadu DGE release official weightage details?
Yes, DGE releases blueprints and chapter-wise mark distributions every year before the final exams. Students should refer to these documents for accurate weightage details, which guide revision and time management effectively.
Tamil Nadu Class 12 Subject-wise Important Topics
Selecting important and high-weightage topics from the Tamil Nadu HSC Class 12th syllabus 2026 helps students score good marks in a limited timeframe. The table below lists the subject-wise important topics included in the Tamil Nadu 12th syllabus.
| Subject | Important Topics |
|---|---|
| English | Essays, Grammar, Poetry, Analysis |
| Mathematics | Calculus, Probability, Matrices |
| Physics | Optics, Electrostatics, Dual Nature |
| Chemistry | Organic Chemistry, Electrochemistry |
| Commerce | Principles of Management, Financial Management |
| Economics | National Income, Monetary Policy |
| History | Indian Freedom Struggle, World Wars |
Tamil Nadu Class 12 Subject-wise Important Topics FAQs
What are the important topics for Tamil Nadu Class 12 Physics 2025-26?
Key topics include Electrostatics, Current Electricity, and Magnetic Effects of Current, Ray and Wave Optics, Dual Nature of Matter, and Semiconductor Electronics. These chapters carry high weightage in the board exams and are crucial for NEET and JEE preparation.
Which chapters are most important in Tamil Nadu 12th Commerce subjects?
For Accountancy, focus on Partnership Accounts, Company Accounts, and Financial Statements. In Economics, stress National Income, Money and Banking, and Fiscal Policy. In Business Studies, emphasize Marketing Management and Business Environment.
How can students identify the most important topics in each subject?
Students can check the previous year's question papers, blueprints, and mark distribution available on the DGE website. Teachers and toppers recommend revising high-frequency topics that repeatedly appear in board exam question papers.
Tamil Nadu Class 12 Subject-wise Weightage
The Tamil Nadu HSC Class 12th marking scheme is split into theory and practical marks, depending on the subject. The table below shows the subject-wise weightage.
| Subject | Theory Marks | Practical Marks | Total Marks |
|---|---|---|---|
| English | 100 | - | 100 |
| Mathematics | 100 | - | 100 |
| Physics | 70 | 30 | 100 |
| Chemistry | 70 | 30 | 100 |
| Computer Science | 70 | 30 | 100 |
| Commerce | 100 | - | 100 |
| Economics | 100 | - | 100 |
| History | 100 | - | 100 |
TN 12th Class Syllabus Subject-wise Weightage FAQs
Ques. What is the overall exam pattern for TN 12th Board Exams 2025-26?
Ans. The exam consists of theory papers and practical assessments for Science subjects. Each theory paper carries 90 marks, and practical/internal assessments carry 10 marks, making a total of 100 marks per subject.
Ques. What is the duration and question format of Tamil Nadu 12th exams?
Ans. Each exam lasts 3 hours. The paper includes Objective (1 mark), Short Answer (2-3 marks), and Long Answer (5 marks) questions, testing conceptual clarity, application skills, and analytical reasoning.
Ques. Are there any changes in the TN 12th exam pattern for 2025-26?
Ans. The question pattern remains similar to 2024-25. However, the emphasis on competency-based and application-oriented questions has increased, especially in Science and Commerce subjects.
Tamil Nadu Class 12 Exam Syllabus 2026: Exam Pattern
As per the Tamil Nadu HSC Class 12th syllabus 2026, each subject has four sections. The detailed exam pattern and marks distribution are given below.
| Section | Question Type | Marks per Question | Total Questions | Total Marks |
|---|---|---|---|---|
| Part A | Multiple Choice (MCQs) | 1 | 15 | 15 |
| Part B | Short Answer | 2 | 10 | 20 |
| Part C | Long Answer | 3 | 10 | 30 |
| Part D | Essay/Descriptive | 5 | 7 | 35 |
| Total | – | – | – | 100 Marks |
Tamil Nadu Class 12 Exam Syllabus Pattern FAQs
Ques. What is the marking scheme for Tamil Nadu 12th theory and practical exams?
Ans. Each subject carries 100 marks – 90 for theory and 10 for practical/internal assessments. Science subjects like Physics, Chemistry, and Biology have separate practical evaluations, while Commerce and Arts subjects have project or record work marks.
Ques. How are internal marks awarded in Tamil Nadu 12th Class?
Ans. Internal marks are based on attendance, class tests, assignments, and practical records. Schools follow SCERT guidelines, and marks are uploaded to the DGE portal before final exams.
Ques. What is the passing mark and grace policy for TN 12th exams 2025-26?
Ans. Students must score a minimum of 35 marks out of 100 in each subject, combining theory and practical. If a student fails in one subject, grace marks or a revaluation option are available as per DGE norms.
How to Score Above 60% in Tamil Nadu Class 12th Exam
You can pass the Tamil Nadu HSC Class 12th exam with good marks through a smart and consistent approach. The first step is to select important topics from the Tamil Nadu Class 12th syllabus 2026.
Analyze the previous five years' question papers for each subject to identify these important topics. The preparation strategies below can help you score above 60% within a limited time.
Preparation Tips
| Preparation Tips | Details |
|---|---|
| Review Syllabus | Review the latest syllabus and marking scheme from DGE Tamil Nadu. |
| High-weightage Targets | Focus on high-weightage chapters first. |
| Previous Year Question Papers | Practice previous year question papers and sample tests. |
| Consistency | Allocate daily study hours per subject. |
| Revision | Revise formulas, definitions, and key points regularly. |
| Time Management | Maintain time management during the exam. |
| Check the Official Website | Stay updated with official announcements on exam dates and pattern changes. |
