Computer Science
Digital code.
(Image credit: Shutterstock).

Computer Science

What is Computer Science?

Computer Science is about understanding computer systems and networks at a deep level. Computers and the programs they run are among the most complex products ever created; designing and using them effectively presents immense challenges. Facing these challenges is the aim of Computer Science as a practical discipline, and this leads to some fundamental questions:

  • How can we capture in a precise way what we want a computer system to do?
  • Can we mathematically prove that a computer system does what we want it to?
  • How can computers help us to model and investigate complex systems like the Earth’s climate, financial systems or our own bodies?
  • What are the limits to computing? Will quantum computers extend those limits?

The theories that are now emerging to answer these kinds of questions can be immediately applied to design new computers, programs, networks and systems that are transforming science, business, culture and all other aspects of life.

Computer Science at Oxford

Computer Science can be studied for three (BA degree), or four years (Master of Computer Science). The fourth year allows the study of advanced topics and an in-depth research project. Everyone applies for the four-year course and chooses their exit point at the beginning of the third year.

The course concentrates on creating links between theory and practice. It covers a wide variety of software and hardware technologies and their applications. We are looking for students with a real flair for mathematics, which you will develop into skills that can be used both for applications such as scientific computing, and more importantly for reasoning rigorously about the specific behaviour of programs and computer systems. You will also gain practical problem-solving and program design skills; the majority of subjects within the course are linked with practical work in our well-equipped laboratory.


Common roles for graduates include computer programmer, software designer and engineer, financial analyst and scientific researcher.

A 2014 Sunday Times report revealed Oxford Computer Science graduates to be the country’s top earners, six months after graduation.

Related courses

Students interested in this course might also like to consider Computer Science and Philosophy, or Mathematics and Computer Science.

Course outline

Computer Science can be studied for three years, leading to the award of a BA degree, or for four years, leading to the award of Master of Computer Science. The fourth year of the Master of Computer Science degree provides the opportunity to study advanced topics and undertake a more in-depth research project. You do not need to decide between these options when you apply; you can choose at the beginning of your third year whether to stay for either one more year or two.

A typical weekly timetable

During the first part of the course, your work is divided between lectures (about ten a week), tutorials (about two a week), and practical classes (about two sessions a week).

In tutorials you discuss ideas in depth with an experienced computer scientist, usually with just one or two other students. You will be expected to spend a considerable amount of time developing your own understanding of the topics covered in lectures, answering questions designed to check your understanding, and preparing for tutorials. As the course progresses, you will also begin to work in small classes (up to ten people) on more specialised topics. In the second year you will take part in an industry-sponsored group design practical. In years three and four, about a third of your time is spent working on your chosen individual project.

1st year

Core courses:

  • Continuous maths
  • Design and analysis of algorithms
  • Digital systems
  • Discrete mathematics
  • Functional programming
  • Imperative programming
  • Introduction to formal proof
  • Linear algebra
  • Probability

Five written papers, plus practicals

2nd year

Core courses (50%):

  • Object-oriented programming
  • Concurrent programming
  • Models of computation
  • Logic and proof

Options (50%) including:

  • Computer architecture
  • Computer graphics
  • Compilers
  • Concurrency
  • Advanced data structures and algorithms
  • Databases
  • Computer networks

Four written papers, plus practicals (including a group design practical)

3rd year

Options (67%) including:

  • Computational complexity
  • Computational learning theory
  • Computer security
  • Computer-aided formal verification
  • Geometric modelling
  • Intelligent systems
  • Knowledge representation and reasoning
  • Lambda calculus and types
  • Principles of programming languages

Project work (33%)


Three written papers, plus practicals and project

4th year

Options (67%) such as:

  • Automata, logic and games
  • Categories, proofs and processes
  • Computational linguistics
  • Computer animation
  • Concurrent algorithms and data structures
  • Database systems implementation
  • Machine learning
  • Probabilistic model checking
  • Probability and computing
  • Quantum computer science
  • Software verification
  • Theory of data and knowledge bases

Project work (33%)


Five written papers, plus practicals and project

Lists of options offered in the 2nd, 3rd and 4th years are illustrative only, and may change from time to time.

Further information about all of our courses:

  • A-levels: A*AA with the A* in Mathematics, Further Mathematics or Computing/Computer Science
  • Advanced Highers: AA/AAB
  • IB: 39 (including core points) with 766 at HL
  • or any other equivalent (see details of international qualifications)

Candidates are expected to have Mathematics to A-level (A or A* grade), Advanced Higher (A grade), or Higher Level in the IB (score 7) or another equivalent. Further Mathematics or another science would also be highly recommended.

Oxford University is committed to recruiting the best and brightest students from all backgrounds. We offer a generous package of financial support to Home/EU students from lower-income households. (UK nationals living in the UK are usually Home students.)


These annual fees are for full-time students who begin this undergraduate course here in 2015.

Fee status

Tuition fee

College fee

Total annual fees

(Channel Islands
& Isle of Man)

For more information please refer to our tuition fees page.

Living costs

Despite what you may have heard, it's no more expensive to study at Oxford than at any other university. In fact, our world-class resources and college provision can help you to lower your living costs.

Living costs for 2015/16 are estimated to be between £950 and £1,450 for each month you are in Oxford. Our academic year is made up of three eight-week terms, so you would not usually need to be in Oxford for much more than six months of the year but may wish to budget over a nine-month period to ensure you also have sufficient funds during the holidays to meet essential costs. For further details please visit our living costs webpage.

Financial support


A full loan is available from the UK government to cover tuition fees for students undertaking their first undergraduate degree*, so you don’t need to pay your tuition fees up front.

In 2015 Oxford is offering one of the most generous bursary packages of any UK university to those on a family income of £42,620 or less, with additional opportunities available to those from households with incomes of £16,000 or less.  This support is available in addition to the government grants and loans.  See further details.

(Channel Islands and Isle of Man)

Islands students are entitled to different support to that of students from the rest of the UK.

Please refer the links below for information on the support to you available from your funding agency:

States of Jersey
States of Guernsey
Isle of Man


Please refer to the "Other Scholarships" section of our Oxford support page.

*If you have studied at undergraduate level before and completed your course, you will be classed as an Equivalent or Lower Qualification student (ELQ) and won’t be eligible to receive government or Oxford funding

Fees, Funding and Scholarship search

All candidates must follow the application procedure as shown in how to apply.  The information below gives specific details for students applying for this course.

Written work

You do not need to submit any written work as part of an application for this course.

Written test

All candidates must take the Mathematics Admissions Test (MAT), normally at their own school or college on 4 November 2015. Candidates must make sure they are available to take the test at this time. Separate registration for this test is required and the final deadline for entries is 15 October 2015. It is the responsibility of the candidate to ensure that they are registered for this test. Please see

For more information on how to apply, including a sample interview, please see the Computer Science website.

What are tutors looking for?

We look for proven mathematical flair, the ability to think and work independently, the capacity to absorb and use new ideas, and enthusiasm. We use these criteria and the MAT results to decide whom to interview.

At interview, we explore how you tackle unfamiliar problems and respond to new ideas; we are more interested in how you approach problem-solving than the solution. We don’t require any previous formal qualification in computing, but we do expect a real interest in the subject.

Selection criteria

Candidates may wish to refer to the selection criteria for Computer Science.

Suggested reading

Introductory reading for prospective applicants to Computer Science can be found on the departmental website.

You may also like to look at our GeomLab website which will introduce you to some of the most important ideas in computer programming in an interactive, visual way through a guided activity.

Kamil, 3rd year

'I love many things about my course. I love the fact that it’s hard, that it’s very theoretical and that we get a lot of practical work. Even when the work is a little challenging you’re never lost because there are so many people around to help you. The tutors really support you at every step and this motivates you to do well.

There are so many wonderful things that I’ve learnt that I never knew existed before. There are definitely moments when, sitting in front of a problem sheet, you realise that you’re at the right place. Computer Science is everything I had hoped for.'

Maria, who graduated in 2007

She is an IT consultant at CHP Consulting. She says:   

‘This has been my first job since graduating. It has allowed me to use the technical skills gained in my degree in a client-facing environment.’

Contextual information

The Key Information Sets provide a lot of numbers about the Oxford experience – but there is so much about what you get here that numbers can’t convey. It’s not just the quantity of the Oxford education that you need to consider, there is also the quality – let us tell you more.

Oxford’s tutorial system

Regular tutorials, which are the responsibility of the colleges, are the focal point of teaching and learning at Oxford. The tutorial system is one of the most distinctive features of an Oxford education: it ensures that students work closely with tutors throughout their undergraduate careers, and offers a learning experience which is second to none.

A typical tutorial is a one-hour meeting between a tutor and one, two, or three students to discuss reading and written work that the students have prepared in advance. It gives students the chance to interact directly with tutors, to engage with them in debate, to exchange ideas and argue, to ask questions, and of course to learn through the discussion of the prepared work. Many tutors are world-leaders in their fields of research, and Oxford undergraduates frequently learn of new discoveries before they are published.

Each student also receives teaching in a variety of other ways, depending on the course. This will include lectures and classes, and may include laboratory work and fieldwork. But the tutorial is the place where all the elements of the course come together and make sense. Meeting regularly with the same tutor – often weekly throughout the term – ensures a high level of individual attention and enables the process of learning and teaching to take place in the context of a student’s individual needs.

The tutorial system also offers the sustained commitment of one or more senior academics – as college tutors – to each student’s progress. It helps students to grow in confidence, to develop their skills in analysis and persuasive argument, and to flourish as independent learners and thinkers.

More information about tutorials

The benefits of the college system

  • Every Oxford student is a member of a college. The college system is at the heart of the Oxford experience, giving students the benefits of belonging to both a large and internationally renowned university and a much smaller, interdisciplinary, college community.
  • Each college brings together academics, undergraduate and postgraduate students, and college staff. The college gives its members the chance to be part of a close and friendly community made up of both leading academics and students from different subjects, year groups, cultures and countries. The relatively small size of each college means that it is easy to make friends and contribute to college life. There is a sense of belonging, which can be harder to achieve in a larger setting, and a supportive environment for study and all sorts of other activities.
  • Colleges organise tutorial teaching for their undergraduates, and one or more college tutors will oversee and guide each student’s progress throughout his or her career at Oxford. The college system fosters a sense of community between tutors and students, and among students themselves, allowing for close and supportive personal attention to each student’s academic development.

It is the norm that undergraduates live in college accommodation in their first year, and in many cases they will continue to be accommodated by their college for the majority or the entire duration of their course. Colleges invest heavily in providing an extensive range of services for their students, and as well as accommodation colleges provide food, library and IT resources, sports facilities and clubs, drama and music, social spaces and societies, access to travel or project grants, and extensive welfare support. For students the college often becomes the hub of their social, sporting and cultural life.

More about Oxford’s unique college system and how to choose a college