Streams and Subjects
Marks Distribution: Theory, Practical and Internal Assessment
Most CBSE Class 12 subjects are marked out of 100, split between a written theory paper and practical work or internal assessment. You must pass both parts separately.
Marks Split by Subject Type (CBSE Curriculum 2026-27)
Subject type | Theory | Practical / internal assessment |
|---|---|---|
Languages (e.g., English, Hindi) | 80 | 20 |
Economics | 80 | 20 |
Physics, Chemistry, Biology | 70 | 30 |
Geography | 70 | 30 |
Most skill subjects | 60 | 40 |
Artificial Intelligence, Data Science, Yoga | 50 | 50 |
For subjects not listed here, refer to the subject-wise curriculum on cbseacademic.nic.in.
What Practical / Internal Assessment Includes
Lab experiments, viva and practical records (science subjects).
Projects and investigatory work.
Listening and speaking assessment (languages), as specified.
Key Takeaways
Science subjects: 70 theory + 30 practical.
Languages and Economics: 80 theory + 20 internal assessment.
AI, Data Science and Yoga: 50 + 50.
Pro Tip: Practical and internal assessment marks are easier to score — complete projects and records on time and prepare for the viva.
Source: CBSE Curriculum 2026-27 (cbseacademic.nic.in)
Frequently Asked Questions
How many marks are for practicals in CBSE Class 12 Physics?
30 marks, with 70 marks for theory.
Do I need to pass theory and practical separately?
Yes. You must pass both components separately.
How are AI and Data Science marked?
50 marks theory and 50 marks practical, as per the 2026-27 curriculum.