How to revise for your A-levels
Dr Lavan Ganeshkumar, PhD · updated 10 September 2026
Most A-level students revise by re-reading their notes and highlighting them. It feels productive, it takes hours, and it is close to worthless. The reason is simple: recognising something on a page is not the same as producing it in an exam hall, and only one of those is being tested.
What follows is the method, in the order you should do it. None of it needs an app. All of it needs you to be uncomfortable, because the discomfort is the part that works.
Test yourself before you feel ready
This is called retrieval practice, and it is the single best-evidenced thing in the whole of study research. Close the book and write down what you remember. Get it wrong. Check. Write it again.
It feels worse than re-reading because it is harder, and students consistently rate it as less effective while performing better on it. Trust the result, not the feeling.
At A-level the practical version is: cover the page, state the definition, then compare. Do not look at the notes first. Looking first turns retrieval back into recognition and the benefit disappears.
Space it out, and let yourself half-forget
Revisiting a topic just as it starts to fade is worth several times revisiting it while it is still fresh. That means you want gaps, not blocks.
A topic learned on Monday wants a look on Wednesday, then the following week, then a fortnight later. Cramming the same topic four times in one evening produces a confident Tuesday and an empty June.
This is why revision that starts in April fails. Not because there is too little time, but because there is no room left for spacing.
Practise with worked solutions, not answers
An answer tells you whether you were right. A worked solution tells you where you went wrong, which is the only part you can act on.
Do the question first, properly, in full, before looking at anything. A question you have read the solution to is no longer a question.
When you get it wrong, write down which step failed rather than the correct final number. Almost every A-level mistake is one of a small number of recurring steps, and you cannot see the pattern if you only ever record the answer.
Then apply it under exam conditions
The last step is exam-style questions, timed, without notes. This is the one most students skip, and it is where marks are actually won.
A-level papers do not test whether you know the content. They test whether you can produce it in a specific form, in a fixed time, in the words the mark scheme accepts.
The bit nobody tells you: the mark scheme has its own vocabulary
You can understand the chemistry perfectly and still score nothing. In rates, "more collisions" earns no mark; "a greater proportion of molecules have energy above the activation energy" earns it. Both describe the same physical fact. Only one is the answer.
This is not pedantry on the examiner's part. The command words and the required terms are published, and marks are awarded against them.
So when you practise, mark yourself against the scheme, not against whether you understood. Ten years of marking says the gap between a B and an A is more often vocabulary than knowledge.
How long, realistically
One focused hour a day, every day, beats a six-hour Sunday. Consistency wins because spacing needs repetitions spread over time, and a weekend blitz gives you one repetition.
If you can only manage twenty minutes on a given day, do twenty minutes. The plan that survives a bad week is the one that works.
Common questions
How do I revise for my A-levels?
Test yourself from memory before you feel ready, space the repeats out over days and weeks rather than blocking them, work full questions before reading the solution, and finish with exam-style questions under timed conditions marked against the mark scheme rather than against whether you understood.
Is re-reading my notes good revision?
No. Re-reading builds recognition, and exams test production. It feels effective, which is why it is the most common method and one of the least useful. Replace it with closed-book retrieval: write down what you remember, then check.
How many hours a day should I revise for A-level?
One focused hour every day beats six hours on a Sunday, because spaced repetition needs repeats spread across time. Consistency matters more than volume, and a plan you can keep on a bad day is worth more than an ambitious one you abandon.
Why do I understand the topic but still lose marks?
Because A-level mark schemes award specific wording. In chemistry rates, "more collisions" scores nothing while "a greater proportion of molecules exceed the activation energy" scores the mark, though both describe the same fact. Mark your practice against the scheme, not against whether you followed the idea.
Trayna does this automatically. You enter your subjects, your exam dates and how long you have each day, and it builds the route from today to those exams, then adapts it as you go. Maths follows Edexcel; Chemistry, Physics and Biology follow AQA.
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