NEP 2020 New Textbooks — What Changed in NCERT Subject-Wise for 2027

In short: NCERT has rewritten textbooks for Classes 6–8 (already in use from 2025-26) and rationalized content for Classes 9–12 under the National Curriculum Framework 2023 (NCF-SE). The changes go beyond surface edits — entire chapters have been removed, new topics like AI and computational thinking have been added, and the pedagogical approach has shifted from memorization to competency-based learning. Here is exactly what changed, subject by subject, and how it affects board exam preparation.

The Timeline of NCERT Textbook Changes

Understanding when changes happened helps you know which version applies to you:

For current students (2026-27): If you are in Classes 9–12, you are using the rationalized versions of the older textbooks. If you are in Classes 6–8, you are using the completely new NCERT textbooks.

What Changed: The Big Picture

The changes fall into five categories:

Subject-Wise Changes: Classes 6–8 (New Books)

Science → Now Called "Curiosity" (Class 6) and Subject-Specific Names

The single "Science" textbook has been split and restructured:

Key Content Changes in Science:

Impact on Students: The new Science books are more activity-oriented. Students are expected to do experiments, collect data, and draw conclusions rather than memorize definitions. This is a fundamental shift from "read and remember" to "observe and understand."

Mathematics → Now Called "Ganita Prakash" (Class 6) and "Ganit Sagar" (Class 7)

New Maths Topics Added:

• Introduction to computational thinking (flowcharts, basic algorithms)
• Data handling with real Indian census and weather data
• Financial literacy (basic interest, savings concepts)
• Spatial reasoning and 3D visualization

Impact on Board Exams: When Classes 9–10 get new textbooks (expected 2027-28), board exam questions will shift significantly toward competency-based formats. Current Class 6–8 students should pay attention — the foundation being built now will determine the exam pattern they face later.

Social Science → Restructured Themes

This is where the most discussed changes occurred:

Specific Changes That Drew Attention:

Government's stated rationale: Reducing content overload (as recommended by NEP 2020) and providing a more balanced historical narrative. NCERT stated this is in line with the NCF-SE 2023 framework.

Impact on Students: Students in Classes 6–8 are studying a substantially different version of history than their seniors did. When these students reach Class 10 board exams (around 2030-31), the exam content will be based on these new textbooks.

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Subject-Wise Changes: Classes 9–12 (Rationalized, Not Rewritten Yet)

Classes 9–12 have not received completely new textbooks yet (expected starting 2027-28 for Classes 9–10). However, the existing textbooks have been rationalized — topics deleted, reordered, or modified.

Class 9 Changes (Rationalized)

The Class 9 curriculum has changed to accommodate the dual-level assessment system (Standard and Advanced levels for Maths and Science):

Class 10 Changes (Board Exam Relevant)

Class 11–12 Changes (Rationalized, Significant)

The rationalization at the Class 12 level directly affects board exams:

Physics:

• Communication Systems: reduced or deleted in many areas
• Logic Gates: completely removed
• Cyclotron working: removed
• Displacement current derivation: removed

Chemistry:

• Some industrial Chemistry applications removed
• Certain biological importance sections deleted
• Band theory: reduced scope

Biology:

• Reproduction in Organisms (Chapter 1): fully deleted in some years
• Strategies for Enhancement in Food Production: deleted
• Environmental Issues: reduced scope

Mathematics:

• Some proof-heavy sections reduced
• Mean Value Theorem: scope limited
• Certain integration techniques: simplified

For the strategic implications of these deletions on your board exam preparation, see our CBSE Class 12 Deleted vs SQP Focus guide.

The AI and Computational Thinking Addition

One of the most significant additions under NEP 2020 is the introduction of AI and computational thinking across grade levels:

CBSE AI Subject (Code 417 for Class 10):

• Introduced as an optional 6th subject
• Theory: 30 marks, Practical: 20 marks, Project: 50 marks
• Covers: AI concepts, data science basics, computer vision, NLP basics
• No board exam — internal assessment only (currently)

This is a gradual rollout. For the 2026-27 session, AI is elective. By 2028-29, computational thinking elements are expected to be integrated into Maths and Science across all classes.

How These Changes Affect Board Exam Preparation

For Current Class 10 Students (Board Exam 2027)

You are using rationalized (not new) NCERT textbooks. Your exam will follow the existing SQP pattern with 50% competency-based questions. Key impacts:

1. NCERT is sufficient — the rationalized syllabus means the textbook is already trimmed to what matters
2. Focus on understanding, not memorization — CBQs test application, not recall
3. Practice assertion-reasoning and case-based questions — these are the new patterns

For Current Class 12 Students (Board Exam 2027)

Similar situation — rationalized NCERT with specific deletions. Key impacts:

1. Check the deleted syllabus for your specific stream
2. SQP is your best guide — it shows the actual question format
3. Competency-based questions (50%) mean surface-level preparation will not work
4. Practice with sample papers to internalize the new patterns

For Parents of Class 6–8 Students

Your children are the first batch using completely new NCERT textbooks. Key things to know:

1. Do not compare with older siblings' books — the content is genuinely different
2. Assessment patterns are changing — expect more projects, presentations, and practical work
3. Private tuition materials may be outdated — ensure tutors are using the new books
4. Olympiad and competitive exam syllabi have not changed at the same pace — there may be gaps

The Pedagogical Shift: From Memorization to Competency

The most important change is not what was added or removed — it is how content is expected to be taught and tested:

This shift is not just philosophical — it directly affects how board exam answers should be written and how students should prepare.

What Students Need to Do Differently

Timeline: When Will New Books Reach Your Class?

Until new books arrive for your class, the rationalized versions of existing NCERT textbooks remain the standard.

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Will the new NCERT books change my board exam syllabus?

If you are in Classes 9–12 in 2026-27, your board exam follows the rationalized version of existing NCERT books — not the new ones. The new books (for Classes 6–8) will only affect board exams when those students reach Class 10 and 12, approximately by 2030-32. Your immediate concern should be the current rationalized syllabus and SQP, not the new textbook content.

Are the old NCERT books still valid for competitive exam preparation?

For JEE and NEET, the old NCERT books remain the gold standard for Class 11 and 12 content. NTA has not changed the JEE/NEET syllabus to match NCERT's rationalization — some topics deleted from boards are still in entrance exam scope. Use old NCERT for entrance prep and the rationalized version for board prep. Keep both versions accessible.

Why were Mughal chapters reduced in the new textbooks?

NCERT stated this is part of the content rationalization under NEP 2020, reducing curriculum load and reorganizing history around themes rather than dynasties. The change was part of a broader restructuring that also reduced ancient and modern period content in some areas. The government position is that core concepts remain while reducing memorization burden.

How does the AI curriculum affect students who do not have computers?

The AI curriculum at the school level (Classes 6–8) focuses on conceptual understanding — what AI is, how algorithms work, ethical considerations — rather than hands-on coding. Schools without computer labs can teach the theory component. However, the practical experience gap is real, and students in resource-limited schools may need to use free online platforms (like Scratch or Google Colab) to supplement their learning.

Will the new textbook changes affect CUET syllabus?

CUET UG domain subjects are aligned with the NCERT curriculum. As NCERT changes, CUET will eventually follow. For 2027, CUET remains aligned with the current Class 12 curriculum. When new Class 12 textbooks are published (expected 2029-30), CUET will update accordingly. There is typically a 1–2 year lag between textbook changes and entrance exam syllabus updates.

Should I buy the old or new NCERT for my class?

Buy whatever your school has prescribed for 2026-27. If you are in Classes 6–8, that will be the new NCERT. If you are in Classes 9–12, that will be the rationalized version of existing NCERT. Do not purchase books based on what your older sibling used — the editions may differ. Check the publication year (should be 2024 or later for Classes 6–8, and the latest reprint for 9–12).

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Related Guides

• Board Exam 2027 — What Changed All Boards Summary
• CBSE Class 12 Deleted Syllabus vs SQP Focus 2027
• How to Write Answers in Board Exams — Subject-Wise Examples
• CBSE Class 10 Sample Paper 2027 — Practice Set
• CBSE Class 12 Sample Paper 2027 — Practice Set
• Daily Study Timetable for Board Exams — CBSE Class 10 & 12

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