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A-Level subject choices and university requirements

How to choose A-Level subjects: what to think about, when universities require particular subjects, and how to keep your options open.

By Britannia Crown · Updated · 4 min read

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On this page
  1. How A-Levels work
  2. Choosing: the three questions
  3. Do universities require specific subjects?
  4. A worked example
  5. Typical routes, and why you must check
  6. Questions to ask the sixth form
  7. A timeline for decisions
  8. Common mistakes
  9. Common questions
  10. Getting ready for the step up

Choosing A-Level subjects is a bigger decision than choosing GCSEs, because the combination can affect which university courses are open to your child. The good news is that the rules are simpler than they look, and most students have more flexibility than they fear.

How A-Levels work

A-Levels are two-year courses taken in Years 12 and 13 (ages 16 to 18), in a school sixth form or a sixth form college. Most subjects are assessed mainly by exams at the end of the second year. Sixth forms usually set their own entry requirements, often a grade 6 or above in the GCSEs of subjects a student wants to continue.

Choosing: the three questions

1. What does your child enjoy, and what are they good at? Two years is a long time to study something you dislike. Past results and teachers' predictions are a good guide.

2. What do they want to do next? If they know their direction, for example medicine, engineering or law, look up the entry requirements. If they do not, choose subjects that keep options open and play to their strengths.

3. Which combination is manageable? Think about the mix of essay-based, problem-based and practical subjects, and how the workload will feel.

Do universities require specific subjects?

For some courses, yes. Courses such as medicine, veterinary science, engineering and many sciences expect particular subjects, such as chemistry, biology, maths or physics. Many other courses accept a wide range of subjects. The reliable approach is to check the entry requirements on the university's own course page and, if a course asks for a subject, to treat that as non-negotiable.

Universities also vary in how they treat certain combinations, so look at the requirements for each course, not general advice.

A worked example

Take a student who enjoys biology and chemistry and is considering medicine, but is also interested in English literature. Medical courses typically ask for chemistry and often biology. The student could choose chemistry, biology and a third subject they enjoy and do well in, which might be maths, English literature or something else, after checking the entry requirements for each course they are considering. The point is not to follow a formula, but to check the specific requirements and then choose subjects they can do well in.

Typical routes, and why you must check

These examples show how requirements often work. They are general patterns, not rules, and every university and course sets its own.

InterestSubjects often expected or helpfulWhat to do
Medicine and related coursesChemistry, and often biologyCheck each course, as requirements and admissions tests vary
EngineeringMaths, often physicsCheck whether further maths is preferred
EconomicsMaths is often required or strongly preferredCheck each course
LawFew require particular subjectsChoose subjects you can do well in, including essay-based ones
Humanities and social sciencesOften flexibleCheck subject lists for competitive courses
Creative coursesA portfolio and relevant subjectsCheck course requirements and portfolio needs

Always confirm on the university's own course page and in the sixth form's guidance. Requirements can change.

Questions to ask the sixth form

  1. What grades do you need to take each subject, and for my child's combination?
  2. How many A-Levels do students normally take, and can they change in the first term?
  3. Which exam boards and specifications do you teach?
  4. What support is there for subjects that are hard?
  5. What do students with our child's target course usually choose?

A timeline for decisions

  • Year 10 and early Year 11: start thinking about interests and sixth form types. Attend open evenings.
  • Autumn of Year 11: apply to sixth forms and colleges, and check deadlines.
  • Spring and summer of Year 11: receive offers, which depend on GCSE results.
  • Results day: confirm the place and subjects. See results day if grades differ from plan.
  • First weeks of Year 12: settle in, and change a subject early if needed.

Common mistakes

  • Choosing a subject because of a friend or a teacher who may not teach the class.
  • Picking subjects only because they sound impressive.
  • Overlooking the step up in independent work.
  • Ignoring the specific requirements of a course they hope to apply for.
  • Dropping a subject the first time it feels hard.

Common questions

Can my child change subject? Many sixth forms let students switch in the first few weeks. After that it becomes harder, so choose carefully.

Is it better to take four A-Levels? Rarely necessary. Most universities make offers based on three, and a fourth can lower the grades in the others.

What about other qualifications? Some students take BTECs, T Levels or the Extended Project Qualification alongside or instead of A-Levels. These can be an excellent fit for some courses and careers.

Getting ready for the step up

A-Levels demand more independent study than GCSEs. Children who find the transition hard often benefit from subject tutoring, especially in maths and the sciences. We have specialist support for A-Level maths, A-Level chemistry, A-Level biology and A-Level physics.

For help with subjects, pathways and exam preparation, see qualifications and exam support, or read how to revise effectively for GCSE and A-Level.

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Questions parents ask

Common questions

How many A-Levels should my child take?

Most students take three. Most universities make offers based on three, and a fourth can lower the grades in the others.

Do universities require specific A-Level subjects?

For some courses, such as medicine, veterinary science, engineering and many sciences, yes. Always check the entry requirements on the university's own course page.

Can my child change subject after starting?

Many sixth forms allow changes in the first few weeks, but it becomes harder after that, so choose carefully.

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