NEW DELHI: The Central Board of Secondary Education (CBSE) has released a detailed subject-wise marks distribution format for Class 10 and Class 12 examinations for the 2026-27 academic session to help schools avoid errors while uploading marks for practical, project and internal assessment components.
The CBSE, in a recent circular, shared a comprehensive list of subjects along with their maximum marks, theory exam duration, practical and project assessment weightage, internal assessment marks, and other examination-related details.
The CBSE issued the circular after observing that schools sometimes make mistakes while uploading marks for practical, project and internal assessment components.
According to the circular, practical exam and internal assessments for Classes 10 and 12 will be conducted in two phases for winter-bound and regular schools, said an official notification.
To view the detailed official notification, click here.
Winter-bound schools: November 11 to December 19, 2026
Regular-session schools: January 1 to February 13, 2027
CBSE has asked schools to take note of the subject-wise details and make the necessary arrangements.
Subject-wise breakdown
The CBSE has provided a subject-wise breakdown covering several important exam parameters for Classes 10 and 12.
Parameters
- Subject codes and subject names
- Maximum marks for theory examinations
- Maximum marks for practical examinations
- Maximum marks for project assessments
- Maximum marks for Internal Assessment (IA)
- Whether an external examiner will be appointed for practical or project assessments
- Whether practical answer books will be supplied by CBSE
- Type of answer book to be used in theory examinations
- Duration of theory examinations
CBSE has clarified that the maximum marks allotted to each subject are 100, with marks distributed among theory and internal assessment components, including practical and project work, wherever applicable.
Class 10
For Class 10, several major academic subjects, including Hindi, English, Mathematics, Science and Social Science, carry 80 marks for theory exams and 20 marks for Internal Assessment, making a total of 100.
However, the distribution differs for subjects involving practical or project components.
Science: 80 marks for theory and 20 marks for Internal Assessment
Mathematics (Standard and Basic): 80 marks for theory and 20 marks for Internal Assessment
Home Science: 70 marks for theory and 30 marks for practical examinations
Computer Applications: 50 marks for theory and 50 marks for practical examinations
Painting: 30 marks for theory, 50 marks for practical examinations and 20 marks for Internal Assessment
Elements of Business: 70 marks for theory and 30 marks for project assessment
Class 12
For Class 12, CBSE has provided a separate subject-wise marks distribution covering academic, practical-based and vocational subjects.
Subjects such as English Core, Hindi Core and several language subjects carry 80 marks for theory and 20 marks for Internal Assessment.
Other subjects follow different assessment structures.
Physics, Chemistry and Biology: 70 marks for theory and 30 marks for practical examinations
Geography: 70 marks for theory and 30 marks for practical examinations
Psychology: 70 marks for theory and 30 marks for practical examinations
History and Political Science: 80 marks for theory and 20 marks for project assessment
Business Studies and Accountancy: 80 marks for theory and 20 marks for project assessment
Computer Science: 70 marks for theory and 30 marks for practical examinations
Informatics Practices: 70 marks for theory and 30 marks for practical examinations
With the 2027 board examination assessment cycle approaching, schools are expected to refer to the prescribed subject-wise distribution before conducting practicals, evaluating projects, and submitting Internal Assessment marks.