How to Use Past Papers to Actually Gain Marks (Not Just Tick a Box)
Most students 'do' past papers wrong. This guide shows the marking-scheme method — how to use Sri Lankan O/L and A/L past papers to find weak points and convert them into marks.
Doing past papers is the highest-return revision activity — but only if you do them the right way. Simply working through questions and checking if you “got it right” wastes most of the value.
The marking-scheme method
- Do the paper timed, in your exam medium, with no notes.
- Mark it against the official marking scheme — not a friend’s answer, not a textbook.
- Categorise every lost mark: was it knowledge, method, units, time, or a careless slip?
- Fix the category, not just the question. If you lost marks on units three times, that’s a units problem to drill — not three unrelated mistakes.
The marking scheme tells you exactly what phrasing and steps earn marks. Learning to write answers the way the examiner expects is often worth more than extra content.
Build a weak-point log
Keep a simple list of recurring error types per subject. Within a few papers you’ll see your real weaknesses — and they’re usually fixable habits, not gaps in knowledge.
Plug it into your plan
Run one past-paper cycle a week using the revision timetable method, and apply it to specific subjects like A/L Physics and O/L Maths.
Frequently asked questions
Where can I find official Sri Lankan past papers?
Official G.C.E. O/L and A/L past papers and marking schemes are released by the Department of Examinations of Sri Lanka. Always cross-check answers against the official marking scheme, not just model answers.
How many past papers should I do before the exam?
Aim to work through at least the last five to ten years of papers for each subject, under timed conditions, reviewing every mistake against the marking scheme.
Should I do past papers in Sinhala, Tamil or English?
Practise in the exact medium you will sit the exam in, so the terminology and phrasing are familiar on exam day.