Hartismere School

Est. 1451. An outstanding coeducational secondary school & sixth form college and England's first academy

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A Level Computer Science

What is it all about?

A level Computer Science builds upon the knowledge and skills developed at GCSE by going into greater depth, particularly with the workings of the CPU, operating systems, web technologies and programming. We have had many successful students who have studied this without taking GCSE computer science, but it would be a steep learning curve.

What do we study?

The course is split into two units at AS (year 12) and three in year 13 for the full A level: 

1. Computer systems: What we learn about includes the workings of the CPU, how software is created and the different types of software, how data is stored and represented in computers, how data is transferred between computers and the impacts of technology.

2. Algorithms and programming: This is all about understanding computational thinking and programming. We do quite a bit of programming using C# to develop experience coding.

3. Programming project: In year 13, students have the opportunity to develop a piece of software of their choice for an end user. They will use an Agile methodology to design, implement and test the program. This is a substantial bit of work but allows students to massively develop their programming ability.

Why would it be useful?

Students have expressed how the problem solving they have developed in computer science has complimented work in other subjects. Even if not actively pursuing a career in the industry, knowledge of how computers operate can only help in the modern world. Every year we have students go on to study computer related subjects at university, degree apprenticeships or straight into employment. The range of careers in the computing industry is massive. There are industries within industries! You have software development, hardware development, database management, web development, cyber security, network management, and many more.

 

We follow the OCR specification

Taking A Level Computer Science

A Level CS: Algorithm Assembly Instructions

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Coding Challenges for GCSE and A Level Computer Science

In this section...

C# Cook Books

Programming software

Sorting Visualiser

C# Yellow Book

Essential programming skills to learn

GCSE Computer Science

I Belong: encouraging girls into computer science programme

CPU Fetch-Decode-Execute Animation

Online Little Man Computer - CPU simulator

See also...

1.6 Systems Security Flashcards | Quizlet

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Design and Technology

Charities

Infrastructure

National SMSC Quality Mark - Gold

Careers & Futures Programme Feedback - Parents

Design and Technology: Literacy

RSHE (Relationships, Sex and Health Education)

Creative iMedia

Explore...

Examinations

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Hartismere Family Privacy Notice

Examination Certificates

1.2.3 Programming techniques Test #1

Service & Leadership

DofE Kit List

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Skillsometer

Careers Information for Teachers

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Personal Development

House Weeks

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Hartismere 200

January 2026 Examinations

CEIAG (Careers Education, Information, Advice & Guidance)

Cyberbullying Advice

Discover...

ICT Computer Science A Level CS Student Information A Levels A Level Coursework Quizlet Art French Business Studies Community Year 7 GCSE Options Trips Learning Support A2 Staff Handbook Networks Music Year 12 C# Practice

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