ISC (ICSE) Class 12 Maths Chapter-Wise Weightage 2027
ISC Class 12 Maths weightage for the 2027 exam, from CISCE's syllabus: marks for each unit of the 80-mark theory paper, plus practical and project marks.
In the ISC 2027 Maths theory paper, Calculus carries 35 of the 80 marks. Here is the full unit-wise split from CISCE's syllabus, and how to use it to plan your revision.
Paper Pattern
- Paper 1: Theory, 3 hours, 80 marks
- Paper 2: Project Work, 20 marks
Unit-Wise Marks (Theory Paper)
| Unit | Marks |
|---|---|
| Relations and Functions | 10 |
| Algebra | 10 |
| Calculus | 35 |
| Vector Algebra | 5 |
| Three-Dimensional Geometry | 6 |
| Linear Programming | 5 |
| Probability | 9 |
| Total | 80 |
Source: CISCE, ISC syllabus for the 2027 examination (cisce.org). CISCE gives marks per unit, not per chapter, and a question can come from any part of a unit.
How to Use Weightage Data
- Start with the heavy units — give them the biggest share of your study time.
- Don't drop any unit — even a 5-mark unit can be the difference between two grades.
- Practise in proportion — the more marks a unit carries, the more questions you should solve from it.
- Check against the specimen paper — CISCE's specimen question paper shows how the marks turn into actual questions.
Preparation Priority Matrix
- High weightage + easy — do these first: most marks for the least effort.
- High weightage + difficult — spend the most time here; these separate the top scores.
- Low weightage + easy — quick wins; cover them for completeness.
- Low weightage + difficult — do these last, but try not to skip them.
Turn this into exam marks
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Start freeFrequently Asked Questions
Which unit carries the most marks in ISC Class 12 Maths?
Calculus: 35 of the 80 theory marks in the ISC 2027 syllabus, followed by Relations and Functions and Algebra (10 marks each).
Can I skip low-weightage units?
Not recommended. Low-weightage units often have short, easy questions. If you are short on time, finish the high-weightage units first, then cover the rest so you can attempt every question.
Does the weightage change every year?
CISCE publishes the unit-wise marks in the syllabus for each exam year and does revise syllabuses from time to time. The figures here are from the ISC 2027 syllabus; check cisce.org for the year you are taking.