How to Prepare for A-Levels (Both Years)
A-Levels reward a different kind of work from GCSE or IGCSE. There's much more content, the questions ask you to apply and evaluate rather than recall, and on most routes the exams that count come at the end. Here's how to prepare steadily, instead of trying to learn two years of material over one Easter holiday.
The jump from GCSE to A-Level catches almost everyone out. Topics that used to take a week now take a month, and essay questions stop asking what happened and start asking why, and how much it mattered. The students who do well usually aren't the ones who seemed cleverest at the start of Year 12. They're the ones who worked out early how the exams are marked, and revised in a way that makes things stick.
Cambridge, for example, designs each A Level around roughly 360 guided learning hours, or about five hours of teaching a week over two years. That's only the classroom part. This guide is about what you do with your own time on top of it.
Treat the syllabus or specification as your checklist, start past-paper questions in Year 12 instead of saving them for the end, and test yourself rather than rereading. At A-Level, a lot of marks are lost on how you answer rather than what you know, so learn how the mark schemes work early.
First, know which A-Level you're actually taking
"A-Levels" covers three quite different systems, and the right plan depends on which one you're in.
| Route | How it's assessed | Exam series | Worth knowing |
|---|---|---|---|
| Cambridge International AS & A Level | Staged (AS papers first, the rest later) or linear (everything at the end) | June and November, plus March in India | An AS result can count toward the full A Level if you complete it within 13 months. Not every subject allows this |
| Pearson Edexcel International A Level (IAL) | Modular: an exam at the end of each unit | January, June and October for most subjects | You can resit units, and for most subjects the better of your two most recent attempts counts |
| UK A levels (AQA, Edexcel, OCR, WJEC Eduqas) | Linear: all exams at the end of the two years | May and June | In England, AS results don't count toward the A level. Some subjects include coursework, called non-exam assessment (NEA) |
If you're on a modular or staged route, your first exams that count could be only a few months away, so "I'll start properly in Year 13" doesn't work. On a linear course the danger is the opposite: nothing feels urgent until suddenly everything is.
How A-Level exams are actually marked
Most A-Level papers test three things, which exam boards call assessment objectives: knowing the content, applying it to something unfamiliar, and analysing or evaluating. The wording differs by subject and board, but in almost every subject the higher marks come from the second and third.
- Command words tell you what to do. "State" wants a fact. "Explain" wants a reason. "Evaluate", "assess" and "to what extent" want a judgement backed by both sides of the argument. Every board publishes its command words, and it's worth reading yours.
- The marks tell you how much to write. A 2-mark question usually needs two distinct points. A 25-mark essay needs an argument, not a list of everything you know.
- Long answers are marked in levels. Examiners place your answer in a band, such as "clear analysis with some evaluation", and then choose a mark within it. The level descriptors in a mark scheme show you exactly what the top band looks like.
- Examiner reports show you where marks go missing. After each exam series, Cambridge and Pearson publish reports on what strong and weak answers did. Most students never read them.
Grade boundaries change every series, so don't aim for a fixed percentage. Aim to be comfortably above recent A or A* boundaries on past papers, marked honestly against the mark scheme.
Revision methods that actually work
In 2013, a team of psychologists led by John Dunlosky reviewed the research on ten common study techniques. Two came out on top: testing yourself and spreading your study out over time. Highlighting and rereading, which is what most students actually do, were rated as low value.
Here's what the better methods look like day to day:
- Blurting. Close your notes, write down everything you remember about a topic, then check what you missed. The gaps become tomorrow's revision list.
- Flashcards on a schedule. Definitions, equations, dates, quotations and case studies all go on cards. A spaced-repetition app like Anki shows you each card just before you'd forget it.
- Past-paper questions by topic. As soon as you finish a topic in class, do the past-paper questions on it. You'll learn how the topic is examined while it's still fresh.
- Explaining it out loud. Teach a topic to a friend, a sibling or an empty room. If you can't explain it simply, you don't know it well enough yet.
- Mixing topics. In Maths and the sciences, practise mixed sets of questions once you know the basics. The exam won't tell you which method a question needs, so your practice shouldn't either.
Notes still have a place. Keep them short, organised by the syllabus, and written as questions you can test yourself on rather than paragraphs you'll only reread.
Subject by subject
Maths and Further Maths
- Do questions topic by topic first, then full mixed papers from the start of Year 13.
- Know exactly what's in your formula booklet and what isn't. You'll need to remember the rest.
- Show your working. Method marks often add up to more than the final answer.
- If you're taking a UK A level in Maths, get to know your board's large data set early, because statistics questions can refer to it.
Sciences
- Learn definitions word for word from the syllabus and mark schemes. Examiners look for specific terms.
- Practical skills are examined too. Cambridge sciences have dedicated practical papers, and in UK A levels the required practicals come up in the written exams.
- Longer "explain" questions reward a clear chain of reasoning. Practise writing them and marking them against the mark scheme, not just reading model answers.
Essay subjects
- History, English, Economics, Psychology, Politics and similar subjects are marked mostly on argument and evaluation. Take a clear position and support it.
- Build a bank of examples, case studies or quotations for each topic, and practise using them in timed paragraphs.
- Write essay plans for past questions. You can plan five in the time it takes to write one, and planning is where most of the thinking happens.
A two-year A-Level plan
This assumes a linear or staged course with summer exams at the end of Year 13. If you sit in November, or you're on a modular route, shift the timings to match your own exam dates.
| When | Focus |
|---|---|
| Year 12, autumn | Get organised: notes by syllabus point, flashcards every week, and nothing left to "catch up on later" |
| Year 12, spring | Past-paper questions after each topic. Start an error log of the mistakes you keep making |
| Year 12, summer | End-of-year exams, or AS exams on a staged or modular route. Then a light review of your weakest topics over the holidays |
| Year 13, autumn | Finish the content and start full past papers topic by topic. Keep coursework and NEA on schedule |
| Year 13, winter | Mocks. Mark them properly, read the examiner reports, and rebuild your plan around what went wrong |
| Year 13, spring | Full timed papers and your error log. The Easter holidays are usually the biggest revision block of the course |
| Exam season | Past papers for the next exam, short reviews, and proper sleep |
How much should you study?
A common rule of thumb from teachers is to match your class time with independent study, which works out at roughly four to five hours per subject each week. You won't manage that every week, and that's fine. What matters more is that the hours are spread out and spent testing yourself, not rereading. For a fuller breakdown by stage and subject, see how many hours to study for A-Levels.
In study leave and the Easter holidays, four to six focused hours a day is realistic for most students, split into blocks of 45 to 90 minutes with proper breaks. Much beyond that and the quality tends to drop off.
Track your A-Level revision
Log focused hours for each subject, keep a daily streak, and tick off topics in our free A-Levels syllabus tracker as you go.
Track Your A-Level Hours Free →Mistakes that cost A-Level grades
- Making beautiful notes and calling it revision. Copying out the textbook feels productive, but it isn't testing you on anything.
- Saving past papers for the end. By then it's too late to fix the gaps they show you.
- Ignoring the mark scheme. Knowing the content isn't enough if you don't know what earns the marks.
- Revising your favourite topics. Your weakest topics are where the cheapest marks are.
- Leaving coursework to the last minute. NEA deadlines tend to land right when mocks and revision do.
- Pulling all-nighters. Sleep is when much of what you learned that day gets consolidated. Losing it before an exam costs more than the extra hours gain.
Keep your revision honest
With three or four subjects, it's easy to spend the week on the one you like and convince yourself you've been revising. The fix is simple: measure it.
Start a timer when you begin real revision, stop it when you drift, and tag each session by subject. At the end of the week you'll see whether Chemistry quietly got half the time Biology did. That's what Group Study Timer is for. It logs focused hours by subject, keeps a daily streak, and lets you study with friends who are revising at the same time. For the stage before A-Levels, see our guide on how to prepare for IGCSE.
Make this week's plan actually happen
A free study timer with subject tracking, streaks and heatmaps. It runs in your browser, so there's nothing to install.
Open the Free Study Timer →Frequently asked questions
When should I start revising for A-Levels?
Start light revision in Year 12, as soon as you finish each topic, with flashcards and past-paper questions on that topic. Full past papers usually start in the autumn of Year 13, and the Easter holidays are the biggest revision block before summer exams.
How many hours a day should I revise for A-Levels?
During term, one to two hours of independent study on most days is realistic for three subjects. In study leave and the Easter holidays, four to six focused hours a day is common, split into blocks with proper breaks.
Are past papers enough to prepare for A-Levels?
They're the most useful resource you have, but not enough on their own. Learn the content first, then use past papers with the mark scheme and examiner reports to see how marks are awarded and where students usually lose them.
Can I get an A* if I'm getting Bs in Year 12?
It's possible. Many students improve a lot in Year 13 once they practise past papers under timed conditions and learn what mark schemes reward. The gap usually closes by fixing the same few mistakes, not by reading more.
What's the difference between Cambridge and Edexcel International A-Levels?
Cambridge International A Levels are staged or linear, with June and November exam series, and an AS result can count toward the full A Level if you finish within 13 months. Pearson Edexcel International A Levels are modular, with exams in January, June and October, and you can resit individual units.
Know which A-Level route you're on, use the syllabus as your checklist, and start past-paper questions in Year 12. Test yourself instead of rereading, learn what each mark scheme rewards, read the examiner reports, and track your hours so every subject gets its share.
Sources we checked in September 2026: Cambridge on A Level teaching hours and carrying AS results forward, Pearson on International A Levels and resit rules, the UK government's AS and A level reform facts, and Dunlosky et al., Improving Students' Learning With Effective Learning Techniques (2013). Rules differ by board and subject, so check your own specification.