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OxfordAQA · A Level

OxfordAQA A Level Computer Science

Computer Science for OxfordAQA A Level (syllabus 9645) — what the qualification covers, and the study material Marlbridge publishes for it.

Syllabus
9645
Board
OxfordAQA
Qualification
A Level

At a glance

Qualification
OxfordAQA A Level Computer Science
Spec code
9645
Does Marlbridge teach it?
Yes
Are resources available?
Yes — 6 published
Is enrolment open?
Enquire to join — no online enrolment yet
Where was this verified?
2026-08-18, official OxfordAQA specification

Compiled and maintained by the Marlbridge Academic Team, checked against the official OxfordAQA specification on 2026-08-18.

Spotted something wrong on this page? Report an error — see the corrections policy.

The qualification

OxfordAQA International AS and A-level Computer Science (9645)

Through a practical approach that balances traditional and modern computing methodologies with programming and creativity, our International AS/A-level Computer Science course develops the skills needed for the future. — OxfordAQA, official syllabus page

A modular qualification spanning procedural and object-oriented programming, data structures and algorithms, computer organisation and architecture, theory of computation, networking and cyber security, databases and artificial intelligence, across two AS papers (an on-screen programming exam and a written paper, each 50% of AS/20% of A-level) and two further A2 papers. This is a recently revised specification: first teaching September 2024, first International AS exams May/June 2025, first International A-level exams May/June 2026.

Specifications change between examination series. Always confirm the current syllabus and assessment structure on the OxfordAQA syllabus page for your examination year.

Assessment structure

Modular qualification

Assessment components for OxfordAQA Computer Science 9645
Component Duration Marks Weighting Type
AS Paper 1: AS Paper 1 -- Procedural programming, fundamental data structures, program design, searching and sorting algorithms (on-screen exam, C#/Python/VB.Net) 2h 75 20% Written exam
AS Paper 2: AS Paper 2 -- Representing data, computer systems, computer organisation and architecture, machine code and assembly language (written exam) 1h 30m 75 20% Written exam
A-level Paper 1: A-level Paper 1 -- Procedural/object-oriented programming, data structures and algorithms (on-screen exam, C#/Python/VB.Net) 2h 30m 90 30% Written exam
A-level Paper 2: A-level Paper 2 -- Functional programming, theory of computation, networking and cyber security, databases, artificial intelligence (written exam) 1h 30m 75 30% Written exam

Source: official OxfordAQA specification, verified 2026-08-28. Directly confirmed against the official live "Assessment" section: a modular qualification of four papers. AS papers each 50% of AS-level/20% of A-level; A-level papers each 30% of A-level. This is a recently revised specification: first teaching September 2024, first International AS exams May/June 2025, first International A-level exams May/June 2026 -- already examined at both levels as of this record's verification date.

Assessment FAQs

How is OxfordAQA Computer Science (9645) assessed?

OxfordAQA Computer Science (9645) is assessed through: AS Paper 1 (AS Paper 1 -- Procedural programming, fundamental data structures, program design, searching and sorting algorithms (on-screen exam, C#/Python/VB.Net)) — 2h, 75 marks, 20% of the qualification; AS Paper 2 (AS Paper 2 -- Representing data, computer systems, computer organisation and architecture, machine code and assembly language (written exam)) — 1h 30m, 75 marks, 20% of the qualification; A-level Paper 1 (A-level Paper 1 -- Procedural/object-oriented programming, data structures and algorithms (on-screen exam, C#/Python/VB.Net)) — 2h 30m, 90 marks, 30% of the qualification; A-level Paper 2 (A-level Paper 2 -- Functional programming, theory of computation, networking and cyber security, databases, artificial intelligence (written exam)) — 1h 30m, 75 marks, 30% of the qualification. It is a modular qualification. Source: official OxfordAQA specification, verified 2026-08-28.

The subject

Computer Science teaching and study resources, organised by level and topic.

All Computer Science at Marlbridge

Syllabus topics

The 16 topics below are the official subject content of OxfordAQA International AS and A-level Computer Science (9645), for the 2024-onwards examination series, reproduced from the OxfordAQA syllabus document.

A topic listed here is part of the syllabus. It does not mean Marlbridge has published material for it — topics with resources are marked. Marlbridge currently has resources for 2 of 16 topics.

AS Level

Topics 1–22. Studied in the first year, and assessed on the AS papers.

  1. AS 1 Procedural programming

    3 Marlbridge resources

  2. AS 2 Fundamental data structures

    3 Marlbridge resources

    Arrays and lists · Records · Queues · Stacks

  3. AS 3 Program design

    Syllabus topic · no resource yet

  4. AS 4 Searching and sorting algorithms

    Syllabus topic · no resource yet

  5. AS 5 Representing data

    Syllabus topic · no resource yet

  6. AS 6 Computer systems

    Syllabus topic · no resource yet

  7. AS 7 Computer organisation and architecture

    Syllabus topic · no resource yet

  8. AS 8 Machine code and assembly language

    Syllabus topic · no resource yet

A Level

Topics 23–37. Studied in addition to the AS content for the full A Level.

  1. A 9 Object-oriented and additional programming

    Syllabus topic · no resource yet

  2. A 10 Advanced data structures

    Syllabus topic · no resource yet

  3. A 11 Advanced algorithms

    Syllabus topic · no resource yet

  4. A 12 Functional programming

    Syllabus topic · no resource yet

  5. A 13 Theory of computation

    Syllabus topic · no resource yet

  6. A 14 Networking and cyber security

    Syllabus topic · no resource yet

  7. A 15 Databases

    Syllabus topic · no resource yet

  8. A 16 Artificial intelligence

    Syllabus topic · no resource yet

Source: OxfordAQA International Qualifications — official qualification page — 2024-onwards series. Verified 2026-08-19. Always check the current syllabus for your examination year.

Study resources

Revision material

Exam preparation

Computer Science at other qualifications

These are separate qualifications with different syllabuses and assessments — not different names for the same course. Check which one your school enters you for.

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