Exam Prep
How to Use Past Papers Properly (Most Students Don't)
By James Whitfield · · 4 min read
Quick answer
Do past papers under timed conditions, mark them yourself against the official mark scheme, and keep a log of every mark you lost and why. The marking and the log are where the learning happens — doing papers without reviewing them properly is practice without feedback, which changes very little.
Start earlier than feels comfortable
Most students save past papers for the final fortnight, treating them as a test of readiness. That wastes their real value. Papers are a teaching tool: they show you what the examiner actually asks, in what style, and with what weighting.
Start once you have covered a topic, even if you can only attempt half a paper. Finding out early that your understanding does not survive exam phrasing is far more useful than finding out in May.
Use the mark scheme like an examiner
Marking your own work is the step nearly everyone skips or rushes. Open the official mark scheme and award marks strictly. Not 'I basically said that' — did you write the point the scheme requires?
This is uncomfortable and enormously instructive. Students routinely discover that answers they were pleased with earn half the marks they expected, because the marks were attached to specific points they gestured at rather than stated.
Keep an error log
For every mark lost, write one line: the question type, the reason, and what you will do differently. Reasons cluster fast — misread the question, no working shown, wrong units, ran out of time, did not know the content.
After three or four papers you will have a personal list of five or six recurring failures. That list is the most valuable revision document you own, and it is impossible to construct any other way.
Separate knowledge gaps from technique gaps
These look identical on a score and need opposite fixes. If you did not know the content, go back and learn it. If you knew it but lost the marks anyway, the problem is technique — and more content revision will not help.
Most students assume every lost mark is a knowledge gap. Once you check honestly, a surprising share turn out to be technique, which is faster to fix.
Recreate exam conditions
Timed, silent, no notes, in one sitting. Working with the textbook open tells you what you can do with help, which is not what the exam measures.
Timing especially needs rehearsal. Many students can answer every question but not within the time limit — a problem only revealed by practising against the clock, and only fixed the same way.
Redo the questions you got wrong
A week later, attempt the same questions again from scratch. If you can now do them, the fix worked. If not, you have identified something that needs teaching rather than repetition.
This closing of the loop is what turns a past paper from a measurement into an improvement.
Frequently asked questions
How many past papers should I do?+
As many as you can review properly. Five papers marked and logged carefully beat fifteen done quickly and filed away — the review is where the improvement comes from.
Should I do papers open-book at first?+
It is fine as a first pass on a new topic, but you must move to closed-book timed conditions well before the exam, because that is the skill being tested.
Where do I get official mark schemes?+
Exam boards publish past papers and mark schemes free on their websites — AQA, Edexcel, OCR, WJEC and Cambridge International all do. Always use the official version rather than a third-party answer sheet.
What if I run out of past papers?+
Use papers from other boards for the same content, older specifications, and topic-based question banks. You can also redo papers after a gap — if you have genuinely forgotten the answers, the practice still counts.
Is it worth paying someone to mark my papers?+
It can be, particularly in essay subjects where the mark scheme leaves room for judgement. A tutor who marks like an examiner will show you where marks are actually awarded, which is difficult to see yourself.
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