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

In this section...

C# Yellow Book

GCSE Computer Science

C# Cook Books

CPU Fetch-Decode-Execute Animation

Online Little Man Computer - CPU simulator

Sorting Visualiser

Programming software

Essential programming skills to learn

See also...



Year 12 revision

Creative iMedia

Cavell House (E) Week (9-13 Oct)

Careers Fair - 14 March 2024

Apprenticeships, Further Education, Higher Education

Year 8


National Apprenticeship Week 2024 - Guide for Parents


Useful Websites

Code.Org - Express computer science course

DofE Kit List

Bronze DofE Trip to Thorpe Woodlands, First Aid Training and Local Walk

The Parent Perspective - Careers Podcast

Avatar Maker

Year 9 One Lesson Task :: Congratulations [Spreadsheet]

Jumping in GameMaker (Tricky)

Careers Information for Pupils

Week beginning 22 May 2023: 'Life Lessons'


Online safety newsletters

Artificial intelligence and assessments

Admissions and Application Forms :: Main School and Sixth Form

My Examinations

National Apprenticeship Week 2024

Key Stage 4 and 5 Performance Tables

Design and Technology

Parents Evening :: Year 8


ICT Computer Science A Level CS Student Information A Levels A Level Cooking Britishvalues Staff Information Design Technology Spanish Film Studies Clubs And Activities Performance C# Recipes Computerphile Repl.It Python Results Motivation Wellbeing Geography

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