What Is an Examiner Report?
For Cambridge IGCSE maths, the principal examiner writes a report on how candidates performed in each exam series. The reports comment on the questions on each paper: the most common errors, what a good answer looked like, and what separated stronger responses from weaker ones. They are free and publicly available. Students who read them know which topics the examiner flagged, which common errors were documented, and what counts as a complete answer.
Where to Find Them
Cambridge publishes examiner reports alongside past papers on its official website. Use the subject-specific resource page rather than a general search.
- Cambridge IGCSE Mathematics (0580): cambridgeinternational.org → Resources → Cambridge IGCSE → Mathematics → Past papers and examiner reports. Reports are available by year and paper.
How to Read One: A Practical Guide
An examiner report is not a document you read front to back. It is a reference tool you mine for specific information. Open the report alongside the corresponding past paper. For each question, read the report's commentary in parallel with the question itself. The sections to focus on are the ones headed 'common errors', 'poorly answered', or 'many candidates...'. These flag the exact errors the board documented across the cohort. Create a list as you go: every topic flagged as poorly answered becomes a candidate for your revision list. Compare the report's description of a full-mark answer with your own attempt. The gap between them shows you precisely what you need to add to your working.
What the Language Tells You
Examiner reports use consistent language that carries specific meaning once you know the code.
- 'Many candidates...' — this error appeared frequently across the cohort. It is on your revision list regardless of whether you made it, because it will appear again.
- 'Some candidates...' — a known trap that catches a significant minority. Usually a conceptual confusion worth checking.
- 'Candidates who performed well on this question...' — this phrase introduces a description of what a top-grade response looked like. Read this carefully: it tells you the specific features that earned the top marks.
- 'This was a well-answered question overall...' — the whole cohort found it accessible. If you struggled, this topic is a gap worth closing before the exam.
- 'Candidates should ensure...' — direct instruction from the chief examiner about what future students need to do. This phrasing appears when the board sees a systemic error they want to correct.
Turning Reports Into a Revision List
The most effective use of examiner reports is building a topic priority list based on what the board has flagged across multiple years. If several years of Cambridge reports flag the same weakness, that is not a one-year coincidence — it is a systematic gap worth adding to your priority list. For example, if the reports repeatedly mention that candidates could not find the nth term of quadratic sequences, that is a warning signal. Three steps: scan the reports for the three most recent sittings, note every repeated flag, and sort the list by frequency. The topics flagged in two or more consecutive years are your highest priority.
Topics Worth Watching
These topics are common sources of lost marks in IGCSE maths. Treat them as default priorities, then check the examiner report for your own paper.
- Ratio and proportion in context — students can often do ratio mechanically but struggle when it is embedded in a worded problem or a multi-step scenario.
- Algebraic proof — 'show that' questions require every step of reasoning to be shown, and many students omit steps they consider obvious.
- Vectors — particularly expressing one vector in terms of two others, or proving that three points are collinear.
- Circle theorems — applying the correct theorem is only the first step; stating the theorem by name and showing the angles is what earns the marks.
Start With a Diagnostic
Examiner reports tell you where the cohort struggled. A diagnostic quiz tells you where you specifically struggle. The two together are more powerful than either alone: use the diagnostic to identify your personal gaps, then use the examiner reports to understand how the board tests those topics and what a full-mark answer looks like. The free diagnostic quiz at MathsTutor.com covers the main IGCSE maths topics and generates a personalised topic priority list.