The O-Level Computer Science curriculum typically covers topics such as computer systems, computer networks, data structures, programming techniques, and problem-solving methods. Students learn about the components of a computer system, such as the CPU, memory, and input/output devices, and how they interact to execute programs.

The course also emphasizes programming skills, teaching students programming languages like Python, Java, or C++. They learn about programming constructs such as variables, data types, control structures, and functions, enabling them to write and analyze simple to moderately complex programs.

In addition to programming, students explore fundamental algorithms and data structures, such as arrays, linked lists, stacks, and queues. They understand how these data structures are used to solve problems efficiently.