What changed in the SEBA / ASSEB syllabus for Class 9 and 10 in 2026-27? The Assam State School Education Board (Division-I, formerly SEBA) published its Curriculum & Syllabi 2026-27 for Classes IX and X. This page explains, in plain words, the changes the board itself lists, and links to the official PDF so you can check every detail.
Last updated: 5 November 2026.
What the Board Says Has Changed in 2026-27
| Change | Class | Details |
|---|---|---|
| Changed or modified textbooks | IX and X | Ten textbooks are listed below. They apply from the 2026-27 session. |
| New lesson: “Our Rights our Responsibility” | X | Added to Social Science (Part-III). It covers child rights and protection, health and hygiene, drug abuse, environmental pollution, road safety and cyber crime. Social Science projects under internal assessment are to be taken from its exercise section. |
| Career counselling write-up | X | “Career Opportunities: Basic Ideas” added as an appendix in the English textbook First Flight. |
| New lesson: “Importance of Entrepreneurship” | IX and X | Added to all skill (NSQF) and vocation-based elective subjects. |
| Spoken English app | IX and X | Used since 2022-23 for the Spoken English part of English internal assessment. It continues. |
Textbooks Changed or Modified from 2026-27
The board lists these subjects:
- General Mathematics, Class IX
- General Mathematics, Class X
- Sanskrit (E), Class IX
- Karbi MIL, Class X
- Garo MIL, Class X
- Dimasa (E), Class IX
- Advanced Mathematics (E), Class IX
- Boichitramoi Asom, Class IX and X
- Social Science Part-III, Class IX
- Social Science Part-III, Class X
If you studied from an older edition, or from a guide or notes made for an older textbook, compare the chapter names with the new textbook before you rely on them. Your school can tell you which edition to use.
Subjects and Marks in Classes IX and X
| Subject | Marks |
|---|---|
| First language (one MIL such as Assamese, Bengali, Hindi, Bodo and others) | 100 |
| Second language: English | 100 |
| General Science | 100 |
| General Mathematics | 100 |
| Social Science | 100 |
| One elective subject, for example Advanced Mathematics, Computer Science, Commerce, Home Science, Sanskrit, Yoga and Physical Education or Artificial Intelligence and Robotics | 100 |
General Mathematics 2026-27: Marks and Chapters
For both Class IX and Class X the board gives: time 3 hours, total 100 marks (theory 90 plus internal assessment 10), pass marks 30, and pass marks 27 in the written examination. Internal assessment is 7 marks for practicals and 3 for a project. The board’s chapter table shows whole chapters and no omitted units.
Class X Mathematics (14 chapters)
- Real Numbers
- Polynomials
- Pair of Linear Equations in Two Variables
- Quadratic Equations
- Arithmetic Progressions
- Triangles
- Coordinate Geometry
- Introduction to Trigonometry
- Some Applications of Trigonometry
- Circles
- Areas Related to Circles
- Surface Area and Volume
- Statistics
- Probability
Class IX Mathematics (13 chapters)
- Number System
- Polynomials
- Coordinate Geometry
- Linear Equations in Two Variables
- Introduction to Euclid’s Geometry
- Lines and Angles
- Triangles
- Quadrilaterals
- Areas of Parallelograms and Triangles
- Circles
- Heron’s Formula
- Surface Area and Volume
- Statistics
How to Use This
- Download the official PDF and the corrigendum, and keep them with your textbooks.
- Read our subject-wise guides: SEBA Class 9 syllabus 2026-27 and SEBA Class 10 syllabus 2026-27.
- Practise with HSLC previous year question papers and Class 9 papers.
- Revise with the free chapters in Class 9 and Class 10 notes, or see the Leepie books.
Frequently Asked Questions
Is the Class 9 and 10 syllabus completely new in 2026-27?
No. The board lists specific changes: ten textbooks changed or modified, a new lesson in Class X Social Science, a career write-up in the Class X English textbook and an entrepreneurship lesson in vocational electives. Check the official PDF for the full details.
Which textbooks changed for 2026-27?
General Mathematics for Class IX and X, Sanskrit (E) Class IX, Karbi MIL Class X, Garo MIL Class X, Dimasa (E) Class IX, Advanced Mathematics (E) Class IX, Boichitramoi Asom for Class IX and X, and Social Science Part-III for Class IX and X.
Where can I download the official 2026-27 curriculum?
The board publishes it on its website, sebaonline.org, as “Curriculum & Syllabi (2026-2027)”. It is a large PDF of about 490 pages, with a separate corrigendum.
What are the pass marks in General Mathematics?
The board states pass marks of 30 out of 100, with 27 pass marks in the written examination (theory is 90 marks and internal assessment is 10 marks).
Is Leepie an official board website?
No. Leepie is an independent learning app. Use the board’s website or your school for confirmed information.