About CS Ninja
CS Ninja is a homework and practice platform made specifically for Computer Science and IT in UK schools. Teachers choose what their classes practise; CS Ninja writes the questions, marks the answers and shows everyone how they are getting on.
Why CS Ninja exists
CS Ninja was created by teachers, for teachers. Setting good Computer Science homework takes time: writing questions, checking answers, marking written responses and following up on the topics students got wrong. CS Ninja was built to remove that repetitive work while leaving teachers in control of what is taught and when.
Built for Computer Science Teachers
Generic homework platforms treat every subject the same, which rarely suits Computer Science. Converting binary and hexadecimal, tracing algorithms, calculating file sizes or working through logic gates needs questions that change their values each time, so students have to do the working rather than remember an answer. CS Ninja’s question templates generate fresh values and variations for each attempt, and its topics follow the structure of the specifications teachers actually teach.
The teaching thinking behind it
- Generated questions — because the values change, a student can’t remember or share an answer; they have to apply the method.
- Retrieval practice — recalling and using knowledge after a gap helps it stick, so homework can revisit earlier topics, not just this week’s lesson.
- Immediate feedback — students learn whether they were right while the question is still fresh, with an explanation rather than a bare tick or cross.
- Revisiting misunderstandings — a skill a student gets wrong comes back later as a new question, so a mistake becomes another go rather than a dead end.
See how this fits into setting Computer Science homework with CS Ninja.
Problems it helps teachers solve
- No routine question writing — a built-in bank covers the supported specifications.
- No marking of multiple-choice and short answers — they are marked instantly with an explanation.
- Less marking of written answers — exam-style questions come with mark schemes, and can be AI-marked on the Ninja AI plan.
- Gaps are revisited — a skill a student gets wrong returns later in the set as a new question.
- Clear results — completion, scores and a skill-by-skill breakdown for each class, exportable to Excel.
How homework, assessment and progress fit together
A teacher picks a class, chooses topics and skills, and sets a start and due date. Students work through generated questions and get feedback straight away. Where the plan includes them, exam-style questions follow, marked by the student against the mark scheme or by AI. Results feed into the teacher’s view of each homework and each student, and students can use independent study to practise any topic outside set work.
Year groups and qualifications
CS Ninja currently supports KS3 Computer Science (Years 7–9), OCR J277 GCSE Computer Science, OCR H446 A Level Computer Science, OCR Cambridge National in IT J836, and OCR Cambridge Advanced National in IT Data Analytics H019/H119. See the full list of courses and specification coverage.
Data protection
Schools remain in control of their pupils’ data. Our data protection and DPIA information sets out what is processed and how it is protected.