2025 Pearson Edexcel GCSE Computer Science Paper 1 and Mark Scheme Combined (1CP2/01: Principles of Computer Science)

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2025 Pearson Edexcel GCSE Computer Science Paper 1 and Mark Scheme Combined (1CP2/01: Principles of Computer Science)

Paper 1 is the Principles of Computer Science component of the Pearson Edexcel GCSE Computer Science qualification (1CP2/01). This paper assesses students’ knowledge and understanding of core computer science concepts, including systems, data, hardware, software, and computational theory.

It complements Paper 2 (1CP2/02: Application of Computational Thinking) and forms 50% of the total GCSE Computer Science grade.

✔ What the Paper Covers

Paper 1 focuses on the following areas:

💾 Computer Systems

Hardware components and their functions

Software types and uses

Input, output, and storage devices

🧮 Data Representation

Binary, hexadecimal, and character encoding (ASCII/Unicode)

Number systems, units of data, and conversions

Data storage, compression, and representation

🔐 Networks and Cyber Security

Network types, topologies, and protocols

Internet, intranet, and cloud computing

Cybersecurity threats and protective measures

⚙️ Computational Theory

Algorithms, flowcharts, and pseudocode basics

Logic gates and Boolean algebra

Programming constructs and computational thinking foundations

📊 Ethics and Impacts

Legal, ethical, and environmental considerations of computing

Social and economic impacts of technology

✔ Structure of the Paper

Multiple-choice questions to assess knowledge

Short-answer questions requiring explanation of concepts

Scenario-based questions testing application and understanding

Extended-response questions for analysis and evaluation of concepts

The paper assesses the following skills:

AO1 – Knowledge and understanding of computer science principles

AO2 – Application of knowledge to scenarios and problem-solving

AO3 – Analysis and evaluation of systems, solutions, and impacts

✔ Mark Scheme (Included in the Combined Document)

The combined question paper + mark scheme includes:

Correct answers for multiple-choice and short-answer questions

Model responses and guidance for scenario-based and extended questions

Allocation of marks for knowledge, application, and evaluation

Examiner notes ensuring consistent and fair marking

The mark scheme emphasizes clarity, accuracy, and the correct use of computer science terminology.

Specifications

Author	zeus999 team
Published	09 Dec 2025
Included files	PDF
2025 Pearson Edexcel GCSE Computer Science Paper 1 and Mark Scheme Edexcel GCSE Computer Science 1CP2 1CP2/01 Principles of Computer Science Computer Systems Data Representation Networks Cybersecurity