How to Choose the Right A Level Subjects for Your Future Degree

There are two ways to pick A Level subjects. You can choose the ones you like and hope they lead somewhere, or you can look at where you want to end up and work backwards. The second way takes more effort at the start, but it avoids the unpleasant discovery, a year or two later, that the degree you've set your heart on wanted a subject you left out.

This guide shows how to work backwards from a university degree: how to find out what a course needs, how to read the way requirements are written, and how to test a subject before you commit. It works alongside our full list of A Level subjects in Pakistan, our guide to how many subjects to take in A Levels and our explanation of science, commerce and humanities subjects.

Requirements change between universities, courses and years, so use this as a method and confirm every detail with the university itself. You can browse each subject on our A Level subjects page, and the A Level practice pages are handy for testing a subject before you decide.

Why Start From the Degree and Not the Subject

A subject can look wonderful in isolation. It might be your favourite at O Level, the one your teacher praises you in and the one friends say is manageable. None of that tells you whether it opens the doors you care about. The degree does.

Starting from the degree also changes the order of decisions. Instead of asking which subjects you want and then checking what's allowed, you ask what's required and then use your strengths and interests to fill the remaining places. Usually, one or two of your three subjects are settled by the degree, and the rest are for you to choose.

The Three Kinds of Subject Requirement

Not every subject a degree mentions carries the same weight. Universities use slightly different wording, but requirements generally fall into three groups.

• Required. You can't be considered without it. Medicine, for example, commonly requires particular sciences. If a subject is required, it goes on your list first.

• Preferred or recommended. It strengthens your application or helps you cope with the course, but you may still be accepted without it. These are good tiebreakers when you're choosing between two options.

• Not specified. The course accepts a range of subjects. Here your strengths matter most, because the best preparation is the subjects you'll do well in.

When you research, note which group each subject falls into. A required subject and a recommended one can look similar on a quick read, but they lead to very different choices.

How to Find What a Degree Needs

• 1

  Choose two or three degrees. Even if you're unsure, pick the ones you're leaning towards. A shortlist is more useful than a single guess.

• 2

  Pick a few universities for each. Include a mix, for example one in Pakistan and one abroad if both are possible, because requirements can differ.

• 3

  Open the course pages. Look for a section called entry requirements, admission criteria or similar, and read what it says about subjects.

• 4

  Write down the subjects, grades and tests. Note what's required, what's preferred and whether there's an entrance test or an interview.

• 5

  Compare across universities. See which subjects appear everywhere and which vary. The ones that appear everywhere are the safest to prioritise.

• 6

  Ask when it's unclear. An admissions office can tell you whether a combination is acceptable. Ask by email so you have the answer in writing.

Do this before you finalise your subjects, not after. A few hours of research now is cheap compared with a year spent on the wrong combination.

Reading an Entry Requirement Page

The wording on these pages can be vague, and a few phrases come up again and again. This table suggests what they usually mean, though you should always check with the university.

If a page is unclear, don't assume. Admissions teams are used to questions from applicants who aren't sure how to read the requirements, and a clear reply can save you months.

Pakistani Universities, Equivalence and Entry Tests

If you're planning to study in Pakistan, there are a few extra steps. A Level results are converted through the IBCC equivalence process, and many programmes, especially in medicine and engineering, also use entry tests. Both can shape which subjects you need and how you prepare.

Check the current requirements for each university and programme, since rules and test formats change. You can estimate how your grades convert with our A Level equivalence calculator, but the certificate itself is the official record. Ask your school's counsellor when to apply, because timing matters.

If You're Applying Abroad

Universities overseas often name specific subjects more firmly, and they may use predicted grades during applications. Some courses expect certain subjects at A Level, and a few ask for a subject plus a particular grade in it.

The practical advice is the same as at home: look up the courses, note what's required and preferred, and check the deadlines. Allow extra time, because overseas applications usually involve personal statements, references and supporting documents on top of your subjects.

When to Do This Research

The earlier you look, the more choice you have, but you don't need to settle everything at once. A rough timeline helps.

• Before O Level results. Start with two or three degrees you find interesting, and read what they ask for. You're just gathering information.
• Around results time. Check which combinations your school can run, and compare them against your shortlist and your grades.
• Before the subject deadline. Finalise your choice, keep a backup, and confirm with the school in writing.
• During AS year. Revisit your plans. If something has changed, find out what the school allows before the next deadline.

If You Don't Know Your Degree Yet

Plenty of students don't. That's fine, and you don't have to pretend otherwise. The aim is to choose in a way that keeps your options open until you know more.

• Include a subject that's widely useful. Mathematics, for example, is named by many science, economics and computing courses.
• Mix kinds of work. A set that combines calculation and writing can lead to more places than a set of three similar subjects.
• Keep your strongest subjects. Good grades in subjects you enjoy are never wasted.
• Use the first year to learn. AS year is a chance to find out what you like, and some schools let you drop a subject afterwards.

Our guide to science, commerce and humanities subjects shows what each group is like, which helps if you're torn between directions.

Balancing Requirements With Your Strengths

Sometimes a degree needs a subject you find hard. It's an uncomfortable position, and there isn't a single right answer. You can work harder on that subject and see if your grade rises, think about a related degree with different requirements, or accept that your plans may change.

Be honest about which of these fits. A subject you barely pass is unlikely to help you get into a competitive course, so if you've tried and it isn't working, it's better to adjust the plan than to carry on in hope. The number of subjects matters here too, and our guide on how many subjects to take in A Levels explains how universities count them.

Test a Subject With Practice Before You Commit

Reading about a subject is useful, but trying it is better. A short session with real questions tells you whether the work feels interesting, manageable and worth two years of effort.

• 1

  Pick a topic from the syllabus. Choose one from the first part of the course, because that's what you'd meet first. Our topic pages show what each subject covers.

• 2

  Try a handful of questions. Use our A Level practice and A Level questions pages to work through a few, without worrying about the score.

• 3

  Notice how it felt. Were you curious, bored or stuck? A subject that frustrates you but still pulls you in is usually fine. One that you dread isn't.

• 4

  Look at a past paper. Open a recent paper from our past papers pages and read through it. Could you see yourself preparing for this?

• 5

  Compare two subjects. If you're choosing between two, do the same exercise for both and see which one you'd rather keep going with.

A Simple Decision Worksheet

Put your research on one page. Write your degree options across the top and these rows beneath them:

• Required subjects for each degree
• Preferred or recommended subjects
• Grades and entry tests mentioned
• Your O Level results in related subjects
• How the practice session felt for each subject
• Whether your school offers the combination

Fill it in, and the best combination usually stands out. Where two options tie, choose the subject you enjoyed more in practice. Enjoyment isn't a luxury at A Level. It's what keeps you working in the months when the content gets difficult.

A Worked Example: Comparing Two Entry Pages

Imagine a student who likes economics and is thinking about a degree in it. She opens two course pages. The first says it requires "Mathematics at grade B or above" and lists Economics as preferred. The second says it accepts "any three subjects" but notes that Mathematics is helpful.

Reading them side by side, she sees that Mathematics appears on both, as required in one and helpful in the other. That makes it the safest subject to include. Economics is preferred on one page and not mentioned on the other, so it's a good choice if she likes it, though not an essential one. Her third subject is open, so she picks one she enjoys and expects to do well in.

She also notes that one page mentions a minimum grade, which tells her Mathematics isn't just something to take but something to do well in. That shapes how she plans her practice, and it's the kind of detail you only find by reading carefully.

Three Common Situations

• Sure about the degree. A student who wants engineering finds that the courses name Mathematics and Physics. Those two are settled, and the third subject comes from interests and strengths.

• Torn between two degrees. A student weighing economics and law finds that both accept a flexible mix. They choose subjects that serve both, such as Economics, an essay-based subject and Mathematics if they like it.

• No idea yet. A student with no clear plan picks subjects they're strong in and enjoy, includes a broadly useful one and revisits the question after the first term.

Mistakes to Avoid

• 1

  Relying on hearsay. "My cousin said you need Physics" isn't a requirement. Check the university's own page.

• 2

  Reading only one university. Requirements differ, so check several before deciding.

• 3

  Confusing preferred with required. Treating a recommendation as compulsory can narrow your choice for no reason, and the reverse can cost you a place.

• 4

  Choosing by prestige. A subject that sounds impressive but doesn't suit you rarely produces the grade you need.

• 5

  Deciding once and never revisiting. Plans change, so keep your worksheet and update it as you learn more.

Talking It Over With Family and Teachers

Family and teachers often have strong views, and they're usually well meant. Their advice is most useful when you bring something concrete: your list of degrees, the requirements you found and how the practice sessions went. That turns a general conversation about what's "sensible" into a specific discussion about evidence.

It also helps to ask each person what their advice is based on. A teacher who has seen many students through the same subjects can tell you what the course demands, while a relative may be recalling a system that has since changed. Listen to all of it, check the facts, and remember that the decision is yours to make.

Questions to Ask Your School and the Universities

• Which subjects does this course require, and which does it prefer?
• Is there a minimum grade in a particular subject?
• Is there an entry test or interview, and when?
• Can my school offer the combination, and when must I decide?
• If I change a subject after AS, how would that affect my plans?

What if Requirements Change?

They sometimes do. A university may update its entry requirements between the time you choose your subjects and the time you apply. This is rare for major shifts, but small changes happen, and a few courses revise their expectations each year.

The practical answer is to check again before you apply, not only when you choose. Keep a note of where you found each requirement, and look at the page again at the start of your second year. If something has changed, speak to your school early, because the options narrow as exams approach.

Preparing Once You've Decided

When your subjects are settled, start building habits that last two years: keep up with the syllabus, practise regularly and review your mistakes. Our A Level practice pages give you a steady supply of questions, and the syllabus pages show what each course expects.

If you'd like help organising revision, see our AI exam preparation guide, which shows how to use AI to practise and check understanding while you do the thinking yourself.

Final Thoughts

Choosing A Level subjects for a degree isn't about guessing. It's about finding out what the course needs, separating requirements from preferences and testing the subjects you'll actually study. A little research and a short practice session can save a lot of trouble later.

For the full list of subjects, read our guide to A Level subjects in Pakistan. For the question of numbers, see how many subjects to take in A Levels, and for what each group is like to study, our guide to science, commerce and humanities subjects.