ISC Class 12 Computer Science Syllabus 2026-27 Released: Download Free PDF for Board Exam Preparation
The Council for the Indian School Certificate Examinations (CISCE) has released the ISC Class 12 Computer Science Syllabus 2026-27 for students preparing for the ISC Examination Year 2027. Candidates studying Computer Science under the ISC curriculum can download the syllabus PDF from the official CISCE website and use it to understand the chapter-wise topics, theory paper structure, practical examination requirements and overall board exam pattern. Computer Science carries 100 marks in total, divided into a 70-mark Theory Paper and a 30-mark Practical Paper, with each examination having a duration of three hours.
The syllabus places significant emphasis on Boolean Algebra, computer hardware, Java programming, object-oriented programming, arrays, strings, recursion and data structures. Students preparing for the 2027 ISC board examination should follow the official syllabus rather than relying only on textbook chapter sequences, as CISCE clearly defines the concepts and programming skills that may be assessed.
ISC Class 12 Computer Science Syllabus 2026-27 Highlights
| Particular | Details |
|---|---|
| Board | Council for the Indian School Certificate Examinations (CISCE) |
| Examination | ISC Class 12 |
| Subject | Computer Science |
| Subject Code | 868 |
| Academic Session | 2026-27 |
| Examination Year | 2027 |
| Total Marks | 100 |
| Theory Paper | 70 Marks |
| Practical Paper | 30 Marks |
| Theory Duration | 3 Hours |
| Practical Duration | 3 Hours |
| Official Website | cisce.org |
ISC Computer Science Exam Pattern
The Class 12 Computer Science examination is divided into two papers:
Paper I – Theory
Maximum Marks: 70
Duration: 3 Hours
The theory paper evaluates conceptual understanding as well as the ability to apply programming and computational problem-solving skills.
Paper II – Practical
Maximum Marks: 30
Duration: 3 Hours
The practical examination tests students' ability to design, write, execute and debug programs according to the prescribed syllabus.
ISC Class 12 Computer Science Theory Syllabus
The syllabus is broadly organised around three major areas: hardware and Boolean logic, Java programming, and data structures/computational concepts.
Section A: Boolean Algebra and Computer Hardware
Boolean Algebra remains one of the most important theory portions of ISC Computer Science.
Students need to study:
Propositional logic
Propositional variables
Logical connectives
Well-formed formulae
Truth tables
Satisfiable and unsatisfiable formulae
Valid formulae
Logical equivalence
Converse
Inverse
Contrapositive
Modus ponens
Boolean variables
AND, OR and NOT operations
Boolean algebra laws
De Morgan's theorems
SOP and POS forms
Minterms and Maxterms
Karnaugh Maps
Simplification of Boolean expressions
CISCE also expects students to understand how Boolean expressions relate to actual switching circuits and logic gates.
Logic Gates and Digital Circuits
Students should prepare the following logic gates:
NOT
AND
OR
NAND
NOR
XOR
XNOR
Applications include:
Half Adder
Full Adder
Encoders
Decoders
Multiplexers
NAND as a universal gate
NOR as a universal gate
Questions can involve truth tables, Boolean expressions, circuit representation and simplification.
Section B: Java Programming
Programming forms a major part of the ISC Computer Science syllabus.
Students are expected to understand algorithmic problem solving, rather than simply memorising Java syntax.
Key topics include:
Methods and Objects
Students should understand:
User-defined methods
Method parameters
Return values
Passing objects as parameters
Returning objects from methods
Class design
Object creation
Constructors
Instance variables
Member functions
Programming questions may require students to design complete classes from a given problem statement.
Arrays
Students should prepare both:
Single-Dimensional Arrays
Important operations include:
Input and display
Searching
Sorting
Mathematical operations
Frequency calculations
Character or number processing
Two-Dimensional Arrays
Students should practise:
Matrix input and output
Row operations
Column operations
Diagonal operations
Matrix transformations
Mathematical matrix problems
String Handling
String-based programming is another important area.
Students should practise:
Character extraction
Word processing
Sentence processing
Palindrome checking
Word frequency
Alphabetical manipulation
Case conversion
Pattern-based string problems
String methods prescribed in the course
Recursion
Candidates should understand how recursive functions operate.
Important concepts include:
Base condition
Recursive calls
Recursive problem solving
Tracing recursive programs
Converting suitable algorithms into recursive solutions
Students should practise writing as well as tracing recursive programs.
Inheritance and Interfaces
Object-oriented programming concepts covered include:
Inheritance
Base and derived classes
Method overriding
Relationships between classes
Interfaces
Implementing interfaces
Object-oriented program design
These concepts can appear in both theoretical and programming-based questions.
Section C: Data Structures and Computational Concepts
The syllabus also introduces important concepts related to data organisation and algorithm efficiency.
Students should prepare the prescribed data structures and understand:
Data organisation
Linear data structures
Operations performed on data structures
Algorithm efficiency
Complexity concepts
The official syllabus also includes concepts connected with analysing the efficiency of algorithms.
Practical Examination
The 30-mark practical examination assesses actual programming ability.
Students may be required to:
Analyse a given programming problem.
Develop an algorithm.
Write the program.
Compile and execute the program.
Correct syntax or logical errors.
Demonstrate the program output.
Explain the logic used in the solution.
Students should practise programming throughout the academic year rather than beginning practical preparation shortly before the board examination.
What Students Should Focus on Most
A strong preparation strategy should give special attention to:
Boolean Algebra + Java Programming + Arrays/String Processing + Recursion + Object-Oriented Programming + Data Structures.
These areas require both conceptual understanding and repeated problem-solving practice.
How to Download ISC Class 12 Computer Science Syllabus PDF
Students can obtain the official syllabus by following these steps:
Visit the official CISCE website.
Open the Regulations and Syllabuses section.
Select ISC Examination Year 2027.
Open the Class XII syllabus section.
Select Computer Science (868).
Download the official PDF.
Save a copy for board exam preparation.
CISCE publishes the examination-year syllabuses through its official website.
ISC Computer Science Preparation Strategy
Students aiming for high marks should divide preparation into three stages.
Stage 1: Complete Concepts
First understand:
Boolean Algebra
Logic gates
Java syntax and OOP
Arrays
Strings
Recursion
Data structures
Avoid memorising programs without understanding the algorithm.
Stage 2: Programming Practice
Write programs regularly.
Practise questions involving:
Number manipulation
Arrays
Matrices
Strings
Classes and objects
Recursive methods
Data structures
Writing code manually is particularly important because the theory examination may test programming logic without providing access to a computer.
Stage 3: Board Question Practice
After completing the syllabus:
Solve previous ISC Computer Science papers.
Attempt specimen papers.
Practise three-hour mock examinations.
Analyse programming errors.
Revise frequently used Java methods and syntax.
Practise Boolean Algebra problems regularly.
Common Mistakes Students Should Avoid
Do not:
Skip Boolean Algebra because it appears theoretical.
Memorise complete Java programs without understanding them.
Ignore program tracing questions.
Delay practical preparation.
Forget output formatting.
Neglect arrays and string manipulation.
Avoid recursion because it initially appears difficult.
Prepare from chapters not included in the official syllabus while leaving prescribed topics incomplete.
ISC Computer Science Board Exam Preparation Checklist
Before the examination, students should be comfortable with:
Truth tables
Boolean laws
Karnaugh Maps
Logic gates
Half and full adders
Java classes
Methods
Constructors
Objects
Arrays
Matrices
Strings
Recursion
Inheritance
Interfaces
Data structures
Algorithm analysis
Practical programming
Frequently Asked Questions
Has the ISC Class 12 Computer Science syllabus 2026-27 been released?
Yes. CISCE has published the syllabus applicable to students preparing for the ISC Examination Year 2027.
What is the ISC Computer Science subject code?
The subject code for ISC Computer Science is 868.
How many marks are there in ISC Class 12 Computer Science?
The subject carries 100 marks, comprising:
70 marks Theory
30 marks Practical
What is the duration of the theory paper?
The ISC Computer Science theory paper is conducted for three hours.
How long is the practical examination?
The practical examination is also of three hours and carries 30 marks.
Is Java included in ISC Class 12 Computer Science 2026-27?
Yes. Java programming remains a major component of the syllabus applicable to Examination Year 2027, including methods, arrays, strings, recursion, inheritance and interfaces.
Is Python part of the ISC 2026-27 Class 12 syllabus?
Students should be careful about this because CISCE has separately published a newer Computer Science syllabus for ISC Examination Year 2028 that includes Python alongside Java. The 2026-27 academic-session students appearing for the 2027 examination should follow the Examination Year 2027 syllabus, not automatically use the later 2028 syllabus.
Where can students download the official PDF?
The syllabus can be downloaded through the CISCE official website under the ISC Regulations and Syllabuses section.
Final Update
The release of the ISC Class 12 Computer Science Syllabus 2026-27 gives students a clear roadmap for preparing for the ISC Board Examination 2027. With 70 marks allotted to theory and 30 marks to practical programming, students need to balance conceptual preparation with regular coding practice.
The most important areas include Boolean Algebra, computer hardware, Java programming, arrays, strings, recursion, inheritance, interfaces and data structures. Students should download the official CISCE syllabus PDF, mark every prescribed topic, practise programs consistently and solve previous board-level questions before the final examination. Following the examination-year syllabus carefully is especially important because CISCE has also introduced changes in later Computer Science syllabuses, and students should avoid mixing content from different examination years.
