CBSE Class 10 and 12 Marks Bifurcation 2026-27: The Central Board of Secondary Education (CBSE) has released the subject-wise marks distribution for the 2026-27 board examinations. The circular, dated 6 November 2026, specifies the maximum marks for theory, practical examinations, project work and internal assessment for individual Class 10 and Class 12 subjects. It also lists theory-paper duration and certain examination arrangements.
Most major Class 10 subjects such as Mathematics, Science, Social Science and languages carry 80 marks for theory and 20 marks for internal assessment. In Class 12, the distribution depends on the subject: Physics, Chemistry and Biology carry 70 theory marks and 30 practical marks, while subjects such as Accountancy and Business Studies use an 80-mark theory and 20-mark project split. Students should check the exact subject code in the official CBSE circular because the same 100-mark total can be divided differently across subjects.
CBSE Marks Bifurcation 2026-27: Overview
| Particular | Details |
|---|---|
| Board | Central Board of Secondary Education (CBSE) |
| Classes covered | Class 10 and Class 12 |
| Academic session | 2026-27 |
| Circular release date | 6 November 2026 |
| Information included | Theory, practical, project and internal-assessment marks |
| Additional details | Theory exam duration, external practical examiner and answer-book information |
| Official website | cbse.gov.in |
CBSE Class 10 Marks Distribution 2026-27
For Class 10, the circular lists 83 subjects, including academic, language, music, art and skill-based options. The most common pattern for core academic and language subjects is 80 marks for the theory paper and 20 marks for internal assessment. Some practical-oriented and vocational subjects follow a different distribution.
| Class 10 subject | Theory | Practical | Project | Internal assessment | Total |
|---|---|---|---|---|---|
| Mathematics Standard (041) | 80 | — | — | 20 | 100 |
| Mathematics Basic (241) | 80 | — | — | 20 | 100 |
| Science (086) | 80 | — | — | 20 | 100 |
| Social Science (087) | 80 | — | — | 20 | 100 |
| English Language & Literature (184) | 80 | — | — | 20 | 100 |
| Home Science (064) | 70 | 30 | — | — | 100 |
| Computer Applications (165) | 50 | 50 | — | — | 100 |
| Painting (049) | 30 | 50 | — | 20 | 100 |
| Elements of Business (154) | 70 | — | 30 | — | 100 |
Music subjects also have a distinct split. The listed Carnatic and Hindustani music subjects carry 30 theory marks, 50 practical marks and 20 internal-assessment marks. Several skill subjects, including Retail, Information Technology, Automotive and Artificial Intelligence, use a 50:50 theory-to-practical distribution. The complete subject-code list in the official PDF should be checked for subjects not shown in the examples above.
CBSE Class 12 Marks Distribution 2026-27
For Class 12, CBSE has published the distribution for academic, language, science, commerce, humanities, music and vocational subjects. The marks are not identical across streams; practical and project components depend on the subject’s assessment requirements.
| Class 12 subject | Theory | Practical | Project | Internal assessment | Total |
|---|---|---|---|---|---|
| Physics (042) | 70 | 30 | — | — | 100 |
| Chemistry (043) | 70 | 30 | — | — | 100 |
| Biology (044) | 70 | 30 | — | — | 100 |
| Geography (029) | 70 | 30 | — | — | 100 |
| Psychology (037) | 70 | 30 | — | — | 100 |
| Accountancy (055) | 80 | — | 20 | — | 100 |
| Business Studies (054) | 80 | — | 20 | — | 100 |
| Economics (030) | 80 | — | 20 | — | 100 |
| History (027) | 80 | — | 20 | — | 100 |
| Political Science (028) | 80 | — | 20 | — | 100 |
| Mathematics (041) | 80 | — | — | 20 | 100 |
| English Core (301) | 80 | — | — | 20 | 100 |
| Computer Science (083) | 70 | 30 | — | — | 100 |
| Informatics Practices (065) | 70 | 30 | — | — | 100 |
For skill-based subjects, the distribution can differ further. For example, several vocational subjects carry 60 theory marks and 40 practical marks, while Multimedia carries 50 theory and 50 practical marks. Some language subjects carry 80 theory marks and 20 internal-assessment marks. Always use the exact subject code when checking the official annexure.
What Is the Difference Between Theory, Practical, Project and Internal Assessment?
- Theory marks: Marks awarded in the written board examination conducted according to the subject’s date sheet.
- Practical marks: Marks awarded for laboratory, performance or other practical assessment as prescribed for the subject.
- Project marks: Marks awarded for subject-specific project work, research or assignments evaluated under the Board’s curriculum.
- Internal assessment (IA): Marks awarded through school-based assessment components such as periodic tests, activities, portfolios or other prescribed work, as applicable to the subject.
These components are not interchangeable. A subject showing 20 project marks does not necessarily have 20 internal-assessment marks. Students should follow the subject-specific curriculum and instructions issued by their school.
CBSE Practical Exam Dates 2026-27: Important Clarification
CBSE’s separate circular dated 5 November 2026 states that practical examinations, project assessments and internal assessments for winter-bound schools will be held from 9 November to 19 December 2026. The same circular says regular-session schools are scheduled to conduct these assessments from 1 January 2027 and that a separate circular will be issued for them. Therefore, the winter-bound dates should not be applied to all CBSE schools. Read the official practical-examination circular.
How to Download CBSE Subject-Wise Marks Bifurcation PDF 2026-27
- Visit the CBSE Examination Circulars page.
- Open the circular dated 6 November 2026 titled “Circular regarding Subject-wise Marks Bifurcation of Class X/XII, Examination 2026-27”.
- Click the English PDF link to open the annexure.
- Go to the Class X or Class XII section, depending on your examination.
- Find your subject by name and code.
- Check the theory, practical, project and internal-assessment columns, along with the theory-paper duration.
- Download and save the PDF for reference.
Direct official PDF: CBSE Class 10 and 12 Marks Bifurcation 2026-27.
Important Points Students Should Remember
- Each subject’s total maximum marks are distributed across the components listed in the official circular.
- Do not assume that all Class 10 or all Class 12 subjects follow the same theory-practical ratio.
- Use the subject code, not only the subject name, because similarly named courses can have different codes or assessment structures.
- Complete projects, practical files and internal-assessment work within the schedule communicated by your school.
- For sample papers, syllabus and curriculum documents, use the CBSE Academic website.
- For the examination timetable, see our CBSE Class 10 Date Sheet 2027 and CBSE Class 12 Date Sheet 2027 articles.
Frequently Asked Questions
Has CBSE released the Class 10 and 12 marks bifurcation for 2026-27?
Yes. CBSE released the subject-wise marks-bifurcation circular on 6 November 2026 for the Class X and Class XII examinations 2026-27.
How many theory marks are there in CBSE Class 10 Mathematics?
The circular lists 80 theory marks and 20 internal-assessment marks for both Mathematics Standard (041) and Mathematics Basic (241).
How are Class 10 Science marks divided?
For Science (086), the circular lists 80 theory marks and 20 internal-assessment marks. The practical column is not separately assigned marks in this table.
How are Physics, Chemistry and Biology marks divided in Class 12?
Each of these subjects is listed with 70 theory marks and 30 practical marks.
How are Accountancy and Business Studies marks divided in Class 12?
Both subjects are listed with 80 theory marks and 20 project marks.
Do all CBSE Class 10 and 12 subjects have practical examinations?
No. The distribution varies by subject. Some subjects have theory and internal assessment, some have practical or project components, and others combine more than one component. Check the official subject code in the circular.
Where can I download the official CBSE marks-bifurcation PDF?
Download it from the CBSE Examination Circulars page or use the direct PDF link provided in this article.
Latest update: 7 November 2026. This guide is based on CBSE’s circular dated 6 November 2026. If CBSE issues a revised circular or corrigendum, the official document will take precedence.