CBSE Class 12 Exam Pattern 2027: 3 Hours, 100 Marks, Marking Scheme and Question Paper Pattern

The CBSE Class 12 Board Exam 2027 is an offline, pen-and-paper examination conducted by the Central Board of Secondary Education (CBSE). Each theory paper runs for 3 hours and carries 70 to 80 marks, with the remaining 20 to 30 marks awarded through internal assessment or practicals. The theory exams are expected in February–March 2027 and the date sheet is anticipated by October–November 2026 at cbse.gov.in.

• The CBSE Class 12 Board Exam 2027 is an offline, pen-and-paper test with no negative marking for any question type.
• Each subject carries 100 marks — split as 70 marks theory + 30 marks practical for Science, and 80 marks theory + 20 marks internal assessment for Mathematics, Commerce, Humanities, and Languages.
• The theory paper carries 50% competency-based questions (case-based, source-based, data-based), 20% MCQs/Assertion-Reason, and 30% short and long answer questions.
• Students receive a 15-minute reading period before writing begins — use it to plan your section-wise attempt strategy.
• You must secure at least 33% marks in both theory and practical/internal assessment separately to pass any subject.
• The theory exam is scheduled in February–March 2027; practical exams run in January–February 2027 at your school.
• Internal choice is provided within most Short Answer and Long Answer questions — you attempt only one out of the two options given.

CBSE Class 12 Exam Pattern 2027: Overview

The CBSE Class 12 Exam Pattern 2027 is an offline pen-and-paper test aligned with the National Education Policy (NEP) 2020. CBSE gives 50% weightage to competency-based questions — case-based, source-based, data-based, and visual-based — to test your ability to apply concepts to real-world situations. The remaining paper splits into 20% objective (MCQ and Assertion-Reason) and 30% subjective (short and long answer) questions.

The CBSE Class 12 Board Exam 2027 is a 3-hour offline test — no computer-based mode is available, and there is no negative marking for any question type.

CBSE Class 12 Exam Pattern 2027: Important Dates

The CBSE Class 12 date sheet 2027 has not been released as of August 2026. CBSE typically publishes the date sheet in October–November 2026, well ahead of the February exam window. Practical exams are conducted by schools before the theory exams begin. All dates below are expected timelines based on previous-year patterns and are subject to official confirmation at cbse.gov.in.

Note: All dates above are expected timelines based on CBSE’s previous-year schedule. The official 2027 timetable will be published at cbse.gov.in.

CBSE Class 12 2027: Detailed Exam Pattern

The CBSE Class 12 detailed exam pattern 2027 divides each subject into theory and practical components. All subjects carry 100 total marks, but the theory-to-practical split differs by subject group. Science subjects carry 70 marks for theory and 30 for practicals, while Mathematics, Commerce, Humanities, and Language subjects carry 80 marks for theory and 20 for internal assessment.

Note: The 15-minute reading time is provided to all students before writing begins and is in addition to the 3-hour paper duration.

Question Type Weightage Across All Theory Papers

Regardless of subject, every CBSE Class 12 theory paper follows this three-way split in question type weightage:

Source: Central Board of Secondary Education (CBSE)

CBSE Class 12 Marking Scheme 2027

The CBSE Class 12 marking scheme 2027 awards marks only for correct answers. There is no negative marking in the CBSE Class 12 board exam — an incorrect answer or an unattempted question both receive zero marks. The marks per question depend on the question type, ranging from 1 mark (MCQ/AR) to 5 marks (Long Answer).

There is no negative marking in the CBSE Class 12 Board Exam 2027 — you should attempt every question, even if uncertain.

Internal Assessment / Practical Marks Breakdown

Note: The exact breakup of practical marks varies by subject. Refer to the official CBSE marking scheme document at cbse.gov.in/marking-scheme.

CBSE Class 12 Subject-Wise Exam Pattern 2027

The CBSE Class 12 subject-wise exam pattern 2027 shows how questions are distributed within each subject’s theory paper. Science subjects follow a five-section paper totalling 70 marks. Mathematics follows a similar five-section format for 80 marks. Commerce and Humanities subjects divide their 80-mark papers into parts based on curriculum units.

Physics (Theory: 70 Marks | Practical: 30 Marks)

Chemistry (Theory: 70 Marks | Practical: 30 Marks)

Biology (Theory: 70 Marks | Practical: 30 Marks)

Mathematics (Theory: 80 Marks | Internal Assessment: 20 Marks)

English Core (Theory: 80 Marks | Internal Assessment: 20 Marks)

Accountancy (Theory: 80 Marks | Internal Assessment: 20 Marks)

Note: Students choose either Financial Statements Analysis or Computerised Accounting for Part B — both options carry 20 marks.

Business Studies (Theory: 80 Marks | Internal Assessment: 20 Marks)

Economics (Theory: 80 Marks | Internal Assessment: 20 Marks)

CBSE Class 12 Question Types 2027

The CBSE Class 12 question types 2027 span five formats across all subjects. Understanding each type helps you plan your time during the 3-hour paper. MCQs and Assertion-Reason questions appear in Section A; competency-based case and source-based questions are interspersed in the later sections; and subjective questions allow internal choice. No question type carries a penalty for a wrong answer.

Case-based and source-based questions together form the 50% competency block — practise reading unfamiliar passages and applying known concepts to new situations.

CBSE Class 12 Exam Pattern: Changes in 2027 vs Previous Year

The CBSE Class 12 exam pattern for 2027 is expected to continue the competency-based framework established under NEP 2020 alignment. As of August 2026, CBSE has not announced any structural changes to the 2026–27 pattern. The 50% competency-based, 20% MCQ, and 30% subjective distribution remains in place. The table below compares key parameters across the 2026 and 2027 cycles.

The CBSE Class 12 pattern for 2027 remains stable — no structural changes have been announced as of August 2026. Monitor cbse.gov.in for any official circular before October 2026.

How to Prepare Based on CBSE Class 12 Exam Pattern

Your preparation for CBSE Class 12 2027 should directly reflect the weight each question type carries. With 50% competency-based questions, rote memorisation alone is not enough. Here is a pattern-driven approach:

1. Prioritise competency-based practice — it is 50% of your marks. Practise reading unfamiliar passages, graphs, and data tables and answering inference questions without previewing the answer. Use CBSE’s official sample papers and previous-year board papers from 2023 onward — these are the most reliable model for the case-based format your 2027 paper will follow.
2. Build concept clarity for MCQs and Assertion-Reason questions (20% of marks). A-R questions specifically test whether you can distinguish between a true assertion and its correct justification. Practise eliminating wrong options by understanding why each distractor is incorrect, not just by memorising the right answer.
3. Attempt every question — there is no negative marking. An unattempted MCQ earns zero; an attempted MCQ you are uncertain about also earns zero at worst. Use the 15-minute reading time to identify which SA and LA questions you will answer where internal choice is given.
4. Secure your practical marks early (30 marks for Science subjects). Your lab work, project, and viva happen in January–February 2027 before theory exams begin. A strong practical score significantly reduces pressure on your 70-mark theory paper.
5. Practise step-marking discipline for Long Answer questions (5 marks each). CBSE markers award marks at each defined step in derivations and structured answers. An incomplete derivation still earns partial marks. Write method steps clearly even if you cannot reach the final answer.
6. Allocate time by section during the paper. Section A (MCQ and A-R at 1 mark each) should take 20–25 minutes. Reserve the remaining 2 hours 35 minutes for Sections B to E. Case-based questions need careful reading — budget 4–5 minutes per case set.
7. Track internal assessment components throughout the year. Periodic tests (10 marks for non-science subjects) and notebook submission (5 marks) run through the academic year. These components offset a weaker theory score and are easier to prepare for than a 3-hour unseen paper.