ISC Syllabus Class 11 Computer Science 2025-26: The CISCE Board just released its 2025–2026 curriculum 11th class. The class 11 computer science syllabus is directly accessible from this article. The ISC Class 11 Computer Science curriculum can be viewed and downloaded here. Since the curriculum is obtained straight from the ISC board's official website, students can download and refer to the PDF with confidence. 868 is the topic code for computer science. Students can find the entire list of chapters, units, and topics that will be taught in the academic year 2025–2026 as part of the syllabus, which also includes the course structure, suggested project work, evaluation criteria, and much more.
As part of the syllabus, students will learn about the subjects, chapters, and units that make up the session's curriculum. For students, a PDF download link has been included below. They can download and store it for later use. Since there are two sections to the Class 11 Computer Science syllabus—the theory paper and the project work—you can review the specifics of each section here. The evaluation scheme and a list of recommended project work ideas are provided.
ISC Class 11 Computer Science Syllabus 2025-26: Highlights
| Overview | Details |
| Subject: | Computer Science |
| Subject Code: | 868 |
| Total Marks: | 100 |
| Theory Marks: | 70 |
| Project Marks: | 30 |
| Exam Duration: | 3 Hours |
ISC Class 11 Computer Science Syllabus 2025-26: AIMS
Aims (Conceptual)
(1) To understand algorithmic problem solving using data abstractions, functional and procedural abstractions, and object based and object-oriented abstractions.
(2) To understand:
- how computers represent, store and process data at different levels of abstraction that mediate between the machine and the algorithmic problem solving level and
- how they communicate with the outside world.
(3) To create awareness of ethical issues related to computing and to promote safe, ethical behavior.
(4) To make students aware of future trends in computing.
Aims (Skills)
- To devise algorithmic solutions to problems and to be able to code, validate, document, execute and debug the solution using the Java programming system.
ISC Class 11 Computer Science: Detailed Syllabus 2025-26
There will be two papers in the subject:
Paper I - Theory: 3 hours: 70 marks
Paper II- Project Work : 30 marks
SECTION A |
| Basic Computer Hardware and Software
|
| 2. Encodings (a) Binary encodings for integers and real numbers using a finite number of bits (signmagnitude, 2’s complement, mantissaexponent notation). (b) Characters and their encodings (e.g. ASCII, ISCII, Unicode). |
| 3. Propositional logic, Hardware implementation, Arithmetic operations (a) Propositional logic, well-formed formulae, truth values and interpretation of well formed formulae, truth tables. (b) Logic and hardware, basic gates (AND, NOT, OR) and their universality, other gates (NAND, NOR, XOR, XNOR), half adder, full adder. |
SECTION B |
| 4. Introduction to Object Oriented Programming using Java Note that topics 5 to 12 should be introduced almost simultaneously along with Classes and their definitions. |
| 5. Objects (a) Objects as data (attributes) + behaviour (methods or methods); object as an instance of a class. (b) Analysis of some real-world programming examples in terms of objects and classes. (c) Basic concept of a virtual machine; Java Virtual Machine (JVM); compilation and execution of Java programs (the javac and java programs). (d) Compile time and run time errors; basic concept of an exception, the Exception class, try-catch, throw, throws and finally. |
| 6. Primitive values, Wrapper classes, Types and casting Primitive values and types: byte, int, short, long, float, double, boolean, char. Corresponding wrapper classes for each primitive type. Class as type of the object. Class as mechanism for user defined types. Changing types through user defined casting and automatic type coercion for some primitive types. |
| 7. Variables, Expressions Variables as names for values; named constants (final), expressions (arithmetic and logical) and their evaluation (operators, associativity, precedence). Assignment operation; difference 3 between left-hand side and right-hand side of assignment. |
| 8. Statements, Scope Statements; conditional (if, if else, if else if, switch case) ternary operator, looping (for, while, do while), continue, break; grouping statements in blocks, scope and visibility of variables. |
| 9. Methods and Constructors Methods and Constructors (as abstractions for complex user defined operations on objects), methods as mechanisms for side effects; formal arguments and actual arguments in methods; different behaviour of primitive and object arguments. Static methods and variables. The this operator. Examples of algorithmic problem solving using methods (number problems, finding roots of algebraic equations etc.). |
| 10. Arrays, Strings Structured data types – arrays (single and multidimensional), strings. Example algorithms that use structured data types (searching, finding maximum/minimum, sorting techniques, solving systems of linear equations, substring, concatenation, length, access to char in string, etc.). |
SECTION C |
| 11. Basic input/output Data File Handling (Binary and Text) (a) Basic input/output using Scanner and Printer classes. (b) Data File Handling: Need for Data file, Input Stream, Output Stream, Byte Stream (FileInputStream and FileOutputStream), Character Stream (FileReader, FileWriter), OperationsCreation, Reading, Writing, Appending, and Searching. |
| 12. Recursion Concept of recursion, simple recursive methods (e.g. factorial, GCD, binary search, conversion of representations of numbers between different bases). |
| 13. Implementation of algorithms to solve problems The students are required to do lab assignments in the computer lab concurrently with the lectures. Programming assignments should be done such that each major topic is covered in at least one assignment. Assignment problems should be designed so that they are sufficiently challenging and make the student do algorithm design, address correctness issues, implement and execute the algorithm in Java and debug where necessary. |
| 14. Packages
|
| 15. Trends in computing and ethical issues (a) Artificial Intelligence, Internet of Things, Virtual Reality and Augmented Reality. Brief understanding of the above and their impact on Society. (b) Cyber Security, privacy, netiquette, spam, phishing. Brief understanding of the above. (c) Intellectual property, Software copyright and patents and Free Software Foundation.
|
ISC Board Class 11th Computer Science 2025-26: Assessment Pattern
Each topic, Commerce, is graded out of 100. Below, students can learn about the evaluation scheme, marks division, and assessment pattern.
| 1. Theory Paper | 70 marks |
| 2. Project Work | 30 marks |
- Students will have to appear for 70 marks paper in their end-term exams (boards).
- The internal assessment has been marked for 30 marks and students will have to submit the project within the deadline (as asked by school).
PAPER II: PRACTICAL – 30 MARKS
This paper of three hours duration will be evaluated internally by the school.
The paper shall 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 permitted for the Planning session and 90 minutes for the Examination session. Candidates are to be permitted to proceed to the Examination Session only after the 90 minutes of the Planning Session are over.
Planning Session
The candidates will be required to prepare an algorithm and a hand-written Java program to solve the problem.
Examination Session
The program handed in at the end of the Planning session shall be returned to the candidates. The candidates will be required to key-in and execute the Java program on seen and unseen inputs individually on the Computer and show execution to the examiner. A printout of the program listing, including output results should be attached to the answer script containing the algorithm and handwritten program. This should be returned to the examiner. The program should be sufficiently documented so that the algorithm, representation and development process is clear from reading the program. Large differences between the planned program and the printout will result in loss of marks.
Teachers should maintain a record of all the assignments done as part of the practical work throughout the year and give it due credit at the time of cumulative evaluation at the end of the year. Students are expected to do a minimum of twenty assignments for the year and ONE project based on the syllabus.
ISC Board Class 11th Computer Science 2025-26: Evaluation
Marks (out of a total of 30) should be distributed as given below:
Continuous Evaluation
Candidates will be required to submit a work file containing the practical work related to programming assignments done during the year and ONE project.
| Programming assignments done throughout the year | 10 Marks |
| Project Work (based on any topic from the syllabus) | 5 Marks |
Terminal Evaluation
| Solution to programming problem on the computer | 15 Marks |
(Marks should be given for choice of algorithm and implementation strategy, documentation, correct output on known inputs mentioned in the question paper, correct output for unknown inputs available only to the examiner).
To download the ISC Class 11 Computer Science Syllabus 2025-26, click on the link below
Download ISC Class 11 Computer Science Syllabus 2025-2026 PDF |
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