Complete Guide to O-Level Computing Syllabus 7155 (2025-2027)

O-Level Computing (Syllabus 7155) is a comprehensive subject that prepares Singapore students for the digital age. This guide covers everything you need to know about the syllabus, exam format, and how to excel in this subject.

Overview of O-Level Computing Syllabus 7155

O-Level Computing (Syllabus 7155) is designed for Secondary 3-4 students and IP students who want to develop computational thinking skills and understand how computers work. The syllabus is administered by the Singapore Examinations and Assessment Board (SEAB).

Key Information

Syllabus Code: 7155
Level: GCE O-Level
Target Students: Secondary 3-4, IP students
Exam Duration: Paper 1 (2 hours) + Paper 2 (2.5 hours)

Exam Format

Paper 1: Written Exam (2 hours, 60% weightage)

Paper 1 tests your theoretical understanding of computing concepts:

Multiple Choice Questions - Test fundamental concepts
Short-Answer Questions - Require concise explanations
Structured Questions - Test deeper understanding
Algorithm Design - Pseudocode and flowcharts

Our Focus: Pen-and-paper practice, tracing exercises, algorithm design

Paper 2: Lab-Based Exam (2.5 hours, 40% weightage)

Paper 2 tests your practical computing skills:

Spreadsheet Tasks - Using JupyterLab for data analysis
Python Programming - Writing and debugging code
Verification Windows - Testing and validating solutions

Our Focus: Hands-on practice, verification techniques, exam-style tasks

Syllabus Topics

1. Logic

Boolean logic, truth tables, and logical operators form the foundation of computing thinking.

Key Concepts:

Boolean operators (AND, OR, NOT)
Truth tables
Logic gates
Boolean expressions

2. Algorithms

Understanding how to design and represent algorithms is crucial for problem-solving.

Key Concepts:

Pseudocode syntax
Flowchart symbols
Algorithm design
Algorithm efficiency

3. Data Analysis

Processing and analyzing data using spreadsheets and Python.

Key Concepts:

Data processing techniques
Data visualization
Spreadsheet functions
Data interpretation

4. Data Representation

Understanding how computers store and represent data.

Key Concepts:

Number systems (binary, hexadecimal)
Data types
Data storage
Character encoding

5. Networking

Understanding how computers communicate and connect.

Key Concepts:

Network types
Protocols
Network security
Internet technologies

Preparation Strategies

1. Start Early

Begin preparing in Secondary 3 to build a strong foundation. Regular practice is key to success.

2. Practice Pen-and-Paper

Since Paper 1 is written, practice writing algorithms and tracing code by hand. This builds exam confidence.

3. Master JupyterLab

Paper 2 requires proficiency in JupyterLab. Practice regularly with exam-style tasks.

4. Understand Concepts, Don't Memorize

Focus on understanding why things work, not just memorizing facts. This helps with application questions.

5. Regular Revision

Review topics regularly to maintain understanding. Use spaced repetition techniques.

How We Help

At Atlas Academy, we specialize in O-Level Computing (Syllabus 7155) preparation:

Small Group Classes - 6-8 students for personalized attention
Exam-Aligned Curriculum - Directly aligned with SEAB syllabus
Pen-and-Paper Focus - Emphasizes Paper 1 preparation
Hands-On Practice - Regular Paper 2 lab practice
Bukit Timah Location - Convenient for West Singapore students

Frequently Asked Questions

What is the difference between O-Level Computing and H2 Computing?

O-Level Computing (Syllabus 7155) is designed for Secondary 3-4 students, while H2 Computing (Syllabus 9569) is for JC students. H2 Computing covers more advanced topics like data structures and software engineering.

Do I need prior programming experience?

No prior programming experience is required. The syllabus is designed to teach computing from the ground up.

How important is Paper 2?

Paper 2 accounts for 40% of your total grade, so it's crucial. Regular practice with JupyterLab is essential.

Can IP students take O-Level Computing?

Yes, IP students can take O-Level Computing. The syllabus is suitable for both O-Level and IP students.

Conclusion

O-Level Computing (Syllabus 7155) is an excellent subject for students interested in technology and problem-solving. With proper preparation and regular practice, you can achieve excellent results.

For expert guidance and exam-aligned preparation, consider joining our small group classes at Atlas Academy in Bukit Timah, Singapore.

Need help with O-Level Computing? Contact us to learn more about our classes and how we can help you achieve your goals.

O Level Computing