Past Papers: The Right Way and the Wasteful Way to Use Them

"Do past papers" is the most common revision advice in the world and one of the least useful, because it leaves out everything that determines whether the exercise works.

A past paper attempted at the wrong time, marked by the person who wrote it, with no follow-up, is roughly two wasted hours.

What a past paper is actually for

It does three jobs that nothing else does as well.

• It tells you what the examiner rewards, which is often not what your notes emphasise.
• It trains the physical skill of producing answers at speed under pressure.
• It produces an accurate, unflattering map of what you do not know.

Only the third one improves your grade directly, and it only works if you mark honestly.

The sequencing mistake

Students commonly attempt full papers in week one of revision, score badly, panic, and conclude that they are hopeless. Others hoard papers and never open them until two days before, when there is no time left to fix anything.

A better sequence has three phases.

1. Question-level practice, early. Take single questions on a topic you have just revised. Open book at first if you need to. The goal is learning the shape of the questions.
2. Timed sections, mid-way. Half a paper, clock running, notes closed. Now you are training pace.
3. Full papers, last three weeks. Complete, timed, in one sitting, ideally at the time of day the real exam happens.

Save at least two clean papers for the final fortnight. Doing a paper you have already seen tells you nothing.

Marking like an examiner, not a parent

This is where most of the value is created and lost.

• Get the official mark scheme. Exam boards publish them free. Guessing your own marks is worthless.
• Read the examiner's report too. Almost nobody does. It states plainly what most candidates got wrong and why, which is the closest thing to a leaked answer you will ever get legitimately.
• Mark strictly. If the scheme requires a comparison and you implied one, that is zero. The real examiner will not read your mind at 11pm with two hundred scripts left.
• Write the reason for every lost mark. Not "silly mistake". Say why: did not know it, misread the question, ran out of time, knew it but explained it badly. Those four categories need four different fixes.

The bit everyone skips

Do the paper, mark the paper, then close it and do something else. That is where 90 per cent of students stop, and it is why the exercise fails.

The productive hour comes next: take every question you lost marks on, revise that specific content properly, and then re-attempt the same question from a blank page two days later. Only when you can produce a full-mark answer unaided has the paper done its job.

Timing yourself properly

Work out the marks-per-minute rate for the paper and write it at the top of every practice attempt. Most students who "run out of time" are not slow writers; they overspend on the first third and starve the last. Practising the pacing is a separate skill from knowing the content, and it is learned only with a clock running.