ISC Class 12 Computer Science Weightage 2026 Unit and Chapter-Wise Marks Distribution
ISC Class 12 Computer Science Weightage includes an 70-mark theory paper and a 30-mark internal assessment (practical), totaling 100 marks. Check more details here.
ISC Class 12 Computer Science Weightage 2026 : The computer science question paper consists of Part I, which carries 20 marks, and Part II (50 marks), which is again divided into three Sections, A, B, and C. In the ISC 12th Computer Science question paper, each section in Part II has three questions. You need to attempt two questions out of three from Section A, each carrying 10 marks, and two questions out of three from Section B, each carrying 10 marks, and two questions out of three from Section C, each carrying 5 marks. Hence, a total of six questions are to be answered in Part II. The remaining 30 marks are for the practical exam. The practical exam weightage comprises lab programming assignments, viva, and practical work. ISC Class 12 Computer Science Syllabus 2025-26 includes 14 units in total combining all the three Sections, A, B and C. Some of the maximum weightage carrying topics are Computational Thinking and Programming (40 marks), Computer Networks (10 marks), and Database Management (SQL commands, case studies) (20 marks). Read the complete article to habe an overview on the ISC Class 12 Computer Science Weightage 2026 Unit and Chapter-Wise Marks Distribution for both theory and practical exams.
ISC Class 12 Computer Science Weightage 2026 Theory Exam - Unit Wise
Go through the unit and chapter wise ISC Class 12 Computer Science Weightage 2026 for the theory exam from the table below:SECTION | UNIT | WEIGHTAGE | |
SECTION A | 1. Boolean Algebra 2. Computer Hardware | 15 Marks | |
SECTION B | 3. Implementation of algorithms to solve problems 4. Programming in Java (Review of Class XI Sections B and C) 5. Objects 6. Primitive values, Wrapper classes, Types, and casting. 7. Variables, Expressions 8. Statements, Scope 9. Methods 10. Arrays, Strings 11. Recursion | 30 Marks | |
SECTION C | 12. Inheritance, Interfaces and Polymorphism 13. Data structures 14. Complexity and Big O notation | 25 Marks | |
Also Read: ISC Class 12 Computer Science Previous Year Question Paper
ISC Class 12 Computer Science Weightage 2026 Practical Exam/ Internal Assessment
The three hours’ practical paper will be evaluated by the Visiting Examiner appointed locally and approved by the Council. The paper will consist of three programming problems from which a candidate has to attempt any one. The practical consists of the two parts:
1. Planning Session
2. Examination Session
The total time to be spent on the Planning session and the Examination session is three hours. A maximum of 90 minutes is allowed for the Planning session and 90 minutes for the Examination session. Check out the ISC Class 12 Computer Science Weightage 2026 for the practical exam:
| Particulars | Details | Weightage |
| Continuous Evaluation | Programming assignments done throughout the year (Internal Evaluation) | 10 marks |
| Terminal Evaluation | Programming assignments done throughout the year (Visiting Examiner) | 5 marks |
| Terminal Evaluation | Solution to programming problem on the computer | 15 marks |
ISC Class 12 Computer Science Question Paper Blueprint 2026
The ISC Class 12 Computer Science question paper is divided into two parts: Part I and Part II. It has a total of 11 questions. Part I is compulsory and has two questions. While attempting Multiple Choice Questions in Part I, you are required to write only one option as the answer. Part II is divided into three sections: A, B and C. Refer to the table below to know more on the latest ISC Class 12 Computer Science Question Paper Blueprint 2026:ISC Class 12 Computer Science Question Paper Blueprint Part 1
Sections | Type of Questions | No of Questions | Marks |
Question 1 | Multiple Choice Questions (MCQs)/Very Short Answer Type | 10 | 1 x 10 = 10 |
Question 2 | Short Answer Type | 4 | 2 x 2 + 3 x 2 = 4 + 6 = 10 |
ISC Class 12 Computer Science Question Paper Blueprint Part 2
Sections | Type of Questions | No of Questions | Marks |
Section - A | Long Answer Type | 2 | 10 x 2= 20 |
Section - B | Program-Based Long Answer Questions (Java) | 2 | 10 x 2= 20 |
Section - C | Long Answer Type | 2 | 5 x 2 = 10 |
Complete the entire ISC 12th Computer science syllabus 2026 before 2 months and solve the previous year question papers. Try to focus on Java programming and practical coding skills alongside theoretical computer science fundamentals. We hope that the above mentioned information has helped you in your preparation. Also Check ISC Class 12 Computer Science Sample Paper 2025-26