Choosing your A Level subjects is one of the most important academic decisions you make after O Levels or IGCSE. Your choices can influence which university courses you can apply for, how manageable your workload will be, and which academic pathways remain open to you.
With subjects such as Mathematics, Further Mathematics, Biology, Chemistry, Physics, Computer Science, Economics, Business, Accounting, Psychology, History, English Literature, and Sociology, students have many possible combinations. The right choice depends on your academic strengths, interests, university requirements, career plans, and preferred learning style rather than simply choosing the subjects your friends are taking.
This A Level subject selection guide explains how to compare subjects, build a suitable combination, understand university prerequisites, and avoid common mistakes when choosing your A Levels.
What Are A Levels?
A Levels are advanced academic qualifications normally studied after O Levels, IGCSE, or an equivalent secondary qualification. Students study individual subjects in greater depth and are generally expected to develop stronger analytical, problem-solving, research, and independent-learning skills.
Students can choose from different subject areas, including:
- Mathematics and Further Mathematics
- Biology, Chemistry, and Physics
- Computer Science
- Economics and Business
- Accounting
- Psychology and Sociology
- History and Geography
- English Language and Literature
- Law
- Art & Design and other creative subjects
- Languages and other specialist subjects
The exact subjects available depend on the school, examination board, timetable, and country. For a broader overview of available subjects and combinations, see Gradelao’s A Level subjects guide.
How Many A Level Subjects Should You Choose?
Most students take three A Level subjects, although some schools and students choose four depending on their academic plans and workload.
Taking more subjects does not automatically mean a stronger application. What matters is whether you can achieve strong grades while meeting the requirements of your intended university course.
Save My Exams similarly notes that three A Levels are the standard route for many students, while four can create a substantially heavier workload.
Before choosing four subjects, ask yourself:
- Can I manage the additional workload?
- Do I need the fourth subject for my intended university pathway?
- Will taking four affect my grades?
- Does my school recommend this combination?
- Can I maintain consistent revision across all subjects?
Three well-managed A Levels can be more practical than taking too many subjects and struggling to maintain performance.
Start With Your University or Career Goal
The first question should not be “Which A Level subject is easiest?”
Instead, ask:
“What university courses or career pathways might I want to pursue?”
You do not need to know your exact career at 16 or 17, but having a general direction can make subject selection much easier.
For example:
| Intended Pathway | Commonly Relevant A Levels |
|---|---|
| Medicine / Dentistry | Biology, Chemistry, Physics or Mathematics |
| Engineering | Mathematics, Physics, Chemistry or Further Mathematics |
| Computer Science | Mathematics, Computer Science, Physics |
| Economics / Finance | Mathematics, Economics, Further Mathematics |
| Business | Business, Economics, Mathematics, Accounting |
| Law | English Literature, History, Economics, Law |
| Psychology | Psychology, Biology, Chemistry, Mathematics |
| Social Sciences | Psychology, Sociology, History, Economics |
| Architecture | Mathematics, Art & Design, Physics |
| Arts & Design | Art & Design, English Literature, relevant creative subjects |
These are examples rather than universal requirements. University requirements differ by institution and degree, so always check the specific entry requirements of your target universities before finalising your subjects.
A Level Subjects for Medicine and Dentistry
Students planning to apply for Medicine or Dentistry generally need to pay particularly close attention to subject prerequisites.
Biology and Chemistry are commonly important subjects for medical pathways, while Physics or Mathematics may also be relevant depending on the university and country.
A common science combination is:
Biology + Chemistry + Physics
Another possible combination is:
Biology + Chemistry + Mathematics
Before selecting your subjects, check the requirements of the medical universities you may apply to, including any requirements related to admissions tests, equivalence, and prerequisite subjects.
If you are preparing for Cambridge A Levels and need additional academic support, explore A Level online tuition for structured subject preparation.
A Level Subjects for Engineering
Engineering degrees often place significant emphasis on Mathematics and Physics.
Common combinations include:
Mathematics + Physics + Chemistry
or
Mathematics + Physics + Computer Science
Students targeting mathematics-intensive engineering courses may also consider:
Mathematics + Further Mathematics + Physics
Further Mathematics can be useful for certain highly mathematical pathways, but whether it is required or recommended depends on the university and engineering course.
LGS’s published A Level combinations include Mathematics + Physics + Chemistry, Physics + Mathematics + Computer Science, and other combinations that add subjects such as Economics, Biology, and Further Mathematics.
Students who want a stronger foundation before A Levels can also review Cambridge IGCSE online tuition before moving into advanced-level study.
A Level Subjects for Computer Science
Computer Science students often benefit from a combination that develops mathematical reasoning and computational thinking.
A commonly considered combination is:
Mathematics + Computer Science + Physics
Another option is:
Mathematics + Computer Science + Chemistry
Mathematics is particularly important for many Computer Science degree programmes, while Computer Science itself may be useful depending on the university.
However, requirements vary. Some universities do not require A Level Computer Science if the student has the required Mathematics background.
The important point is to check your target university’s entry requirements rather than assuming that a particular subject is compulsory everywhere.
A Level Subjects for Economics, Finance and Business
Students interested in Economics or Finance often consider:
Mathematics + Economics + Business
or:
Mathematics + Economics + Accounting
For more quantitative university pathways, Mathematics can be particularly important.
Students interested in Business may have more flexibility because different universities can have different subject expectations.
For example, LGS’s published combinations include Mathematics + Economics + Business, as well as combinations involving Mathematics, Economics, Accounting, Computer Science, and other subjects.
If you want to develop your preparation for advanced-level business subjects, Gradelao’s A Level tuition programme can provide structured academic support.
A Level Subjects for Law
Law is often associated with essay writing, argumentation, reading, analysis, and critical thinking.
Students interested in Law may consider combinations such as:
English Literature + History + Economics
or:
English Language + History + Sociology
Other combinations can also work depending on university requirements.
An important point is that A Level Law is not universally required for a Law degree. Universities can accept students from a wide range of academic backgrounds.
Instead of choosing subjects simply because they contain the word “Law,” look at the requirements of the universities and degree programmes you are considering.
A Level Subjects for Psychology
Psychology can overlap with both science and social science pathways.
Possible combinations include:
Psychology + Biology + Chemistry
or:
Psychology + Biology + Mathematics
Another option could be:
Psychology + Sociology + English Literature
The most appropriate combination depends on whether you want to keep your options open toward biological sciences, social sciences, psychology, education, or another field.
A Level Subjects for Humanities and Social Sciences
Students interested in subjects such as History, Sociology, Geography, Politics, Law, or English Literature can create combinations around essay writing, analysis, research, interpretation, and critical thinking.
Examples include:
History + English Literature + Sociology
History + Economics + English Literature
Sociology + Psychology + English Literature
There is no universal “correct” combination. The best starting point is to compare your strengths with the requirements of your intended degree programmes.
How to Choose Between Similar A Level Subjects
Sometimes the difficult decision is not choosing three subjects from twenty—it is choosing between two subjects that both seem suitable.
For example:
Economics vs Business
Economics focuses heavily on economic concepts, markets, policy, data, and analysis, while Business focuses more on organisations, decision-making, operations, marketing, finance, and business strategy.
Mathematics vs Further Mathematics
Further Mathematics goes beyond the standard Mathematics syllabus and is generally more demanding. It can be particularly relevant for students pursuing highly mathematical university pathways.
English Language vs English Literature
English Language focuses more on language, communication, and analysis of how language is used, while English Literature focuses on analysing literary texts, themes, techniques, and interpretations.
Understanding these differences can help you choose subjects based on what you enjoy studying and what your future pathway requires.
Consider Your Academic Strengths
Your O Level or IGCSE performance can provide useful evidence when selecting A Levels.
Look at:
- Subjects where you consistently achieve strong grades
- Subjects you genuinely enjoy studying
- Topics you find naturally interesting
- Your preferred type of assessment
- Your ability to manage large amounts of content
- Your mathematical and analytical ability
- Your writing and evaluation skills
For example, a student who enjoys solving numerical problems may naturally prefer Mathematics or Physics, while someone who enjoys essays, arguments, and reading may prefer History, English Literature, or Sociology.
Your previous grades should not be the only factor, but they are useful evidence when evaluating your readiness.
Think About Your Learning Style
Different A Level subjects demand different skills.
Content-heavy subjects may require regular memorisation and revision.
Mathematical subjects require repeated problem-solving practice.
Essay-based subjects require argument development, evidence, evaluation, and structured writing.
Practical or creative subjects may involve coursework, portfolios, or practical assessment depending on the syllabus.
Think about the type of work you can consistently perform well rather than choosing a subject only because it sounds impressive.
Check University Requirements Before Finalising Your Combination
This is one of the most important steps in A Level subject selection.
Make a shortlist of universities and degree programmes you may want to apply to. Then check:
- Required A Level subjects
- Preferred subjects
- Minimum grades
- Required combinations
- GCSE/O Level requirements
- Additional admissions tests
- Country-specific requirements
- Equivalence requirements where applicable
Do this before submitting your final A Level choices.
Save My Exams also recommends checking degree requirements early because certain university courses have specific subject prerequisites.
A Level Subject Selection in Pakistan
Students studying A Levels in Pakistan should consider both their international university options and local admission requirements.
If you plan to apply to Pakistani universities, check the relevant university’s current admission criteria and IBCC equivalence requirements before choosing your subjects.
This is especially important for regulated or subject-specific pathways where particular combinations may be required.
Do not rely solely on advice from friends, social media, or older students. Admission requirements can change, so verify the current requirements directly with the university or relevant authority.
Should You Choose “Hard” or “Facilitating” Subjects?
You may hear terms such as “facilitating subjects” when researching A Level choices.
These terms can be misleading if treated as a universal ranking of subjects.
Save My Exams notes that universities have moved away from treating a fixed list of “facilitating subjects” as a universal requirement. Instead, students should focus on the requirements of the specific degree they want to study.
Therefore, do not choose a subject simply because someone tells you it is “more valuable.”
Choose subjects that:
- Match your intended degree requirements
- Suit your academic strengths
- Interest you enough to study consistently
- Give you an appropriate workload
- Keep useful options open
Common A Level Combination Mistakes to Avoid
Choosing Subjects Because Your Friends Choose Them
Your friend’s combination may be perfect for their goals but unsuitable for yours.
Choosing Only Based on Perceived Difficulty
A subject being considered “hard” or “easy” does not tell you whether it is suitable for your university pathway.
Ignoring University Requirements
This can create problems later if your chosen degree requires a subject you did not take.
Taking Too Many Subjects
More A Levels can mean significantly more coursework, revision, and examination preparation.
Choosing Subjects You Dislike
You will study these subjects for an extended period. Interest and motivation matter.
Relying on Old Admission Information
University requirements can change. Always check the current requirements for your intended intake.
A Simple A Level Subject Selection Checklist
Before finalising your choices, ask yourself:
1. Do I enjoy these subjects?
2. Am I academically strong in them?
3. Do they match my intended university course?
4. Do they keep enough alternative pathways open?
5. Can I realistically manage the workload?
6. Have I checked current university requirements?
7. If studying in Pakistan, have I checked relevant equivalence and admission requirements?
8. Does my school actually offer this combination?
If you can answer these questions confidently, you are much closer to making an informed A Level subject decision.
Need Help Choosing and Preparing for A Levels?
Selecting your subjects is only the first step. Once you have your combination, you need a structured study plan, syllabus coverage, exam practice, and regular revision.
Gradelao provides A Level online tuition for students who want structured academic support across their A Level subjects.
You can explore A Level tuition options or book a free trial class to discuss your subjects and learning requirements.
If you are moving from O Levels into A Levels, you can also explore Cambridge O Level online tuition or Edexcel A Level online tuition if you are following the Pearson Edexcel pathway.
Students taking Edexcel IGCSE can explore Edexcel IGCSE online tuition before progressing to their A Level programme.
Frequently Asked Questions About A Level Subject Selection
How many A Level subjects should I choose?
Three subjects are a common choice, while some students take four depending on their academic goals, school policy, and ability to manage the workload.
Which A Level subjects should I choose for university?
Choose subjects based on the entry requirements of the university courses you are considering. Some degrees have specific prerequisites, while others allow more flexibility.
What are the best A Level subject combinations?
There is no single combination that is best for every student. The appropriate combination depends on your strengths, interests, university requirements, and future plans.
Should I choose A Level subjects based on my career?
Your career goal can provide useful direction, but you do not need to have your entire career decided before choosing A Levels. Consider your likely degree pathways and keep reasonable alternatives open.
Can I change my A Level subjects?
This depends on your school, examination board, timetable, and how far you have progressed through the course. If you are considering a change, speak to your school or academic adviser as early as possible.
Is A Level Mathematics necessary for Computer Science?
Not universally. Many Computer Science degree programmes value or require Mathematics, but exact requirements vary between universities. Always check the entry requirements of the courses you are targeting.
Is A Level Law required for a Law degree?
No, not universally. Many universities accept a range of A Level combinations for Law. Check the specific requirements of each university.
Final Thoughts
Choosing A Level subjects is about creating a combination that fits your academic strengths, interests, workload, and future study plans.
There is no universal list of “best A Level subjects.” A combination that works well for Medicine may be unsuitable for Law, while a combination suitable for Engineering may not be appropriate for someone planning to study Humanities.
Start with your possible university pathways, check the required subjects, evaluate your strengths, consider workload, and then select a combination you can realistically perform well in.
For a broader overview of available options, continue to the Gradelao A Level Subjects guide.
Need help preparing for your chosen subjects? Book a free Gradelao trial class and get structured A Level academic support.