Revision that actually works: what the research says, applied to IGCSE and the IB Diploma
How to revise effectively for IGCSE and IB: what research says works, what only feels productive, and a weekly routine built on past papers and self-testing.
If you want to know how to revise effectively, the short answer is this: test yourself, space your practice over weeks, and mark past papers strictly against the official scheme. Rereading, highlighting and copying out neat notes feel productive, but they leave far less behind.
Most students who revise hard and still underperform are not lazy. They are using methods that feel like work. This guide sets out what the evidence says and what it does not, then turns it into a weekly routine for an IGCSE student and for an IB Diploma student in Dubai or Sharjah.
What the research actually says
The most cited review of study techniques is by John Dunlosky and four colleagues, published in 2013 in Psychological Science in the Public Interest under the title "Improving Students' Learning With Effective Learning Techniques". It rated ten common techniques on how well they held up across ages, subjects and types of test. The Association for Psychological Science summary gives the headline. In short:
- High utility: practice testing and distributed (spaced) practice
- Moderate utility: interleaved practice, elaborative interrogation (asking yourself why a fact is true) and self-explanation
- Low utility: rereading, highlighting and underlining, summarising, the keyword mnemonic, and imagery for text
The low-utility list describes most revision timetables we see. A student rereads the chapter, highlights it, rewrites it as neat notes, and feels ready. Familiar is not the same as retrievable in an exam hall.
The Education Endowment Foundation, an English education charity, reached a more cautious but compatible conclusion in its 2021 review, Cognitive science approaches in the classroom, which looked only at studies run in real schools. It found retrieval practice, spaced practice and worked examples promising, while noting that few studies test them in everyday classrooms over long periods. On interleaving it was more careful: 11 of the 12 studies it found were in mathematics.
So science has not solved revision. But testing yourself, spacing your practice and learning from worked solutions have the strongest support, and passive review has the weakest.
The five methods, in plain terms
1. Retrieval practice: test yourself before you feel ready
Retrieval practice means pulling information out of memory rather than putting it back in. Closing the book and writing down everything you know about photosynthesis is retrieval. Rereading the page is not.
It should feel effortful: you half-remember, struggle, then check. Flashcards work when you say the answer before turning the card. So does a blank page, or a past paper question with no notes open.
2. Spaced practice: little and often, over weeks
Ten hours on one topic in one weekend leaves less behind than the same ten hours spread across several weeks. Every topic you study should come back a few days later and again a couple of weeks later, as a short self-test rather than a full re-teach.
3. Interleaving: mix the problem types
Blocked practice means twenty questions on the same method. Interleaving mixes question types so you must first decide which method applies, which is what an exam asks. Since the evidence comes mostly from maths, use it where it clearly fits (maths, physics, chemistry calculations, economics, accounting) and only once a topic has been learned.
4. Worked examples: study a full solution, then do one alone
For a student who cannot yet solve a problem type, studying a complete worked solution and then attempting a similar question alone beats struggling blind. A mark scheme is not a full worked solution, but it shows the steps examiners credit, so use it the same way.
5. Past papers under timed conditions
Past papers combine these methods: retrieval, mixed topics and, in the mark scheme, a guide to what earns credit. Spread across weeks, they give you spacing too. They also train timing, command words and knowing where the marks sit in a question.
What feels productive but underperforms
| What students do | Why it feels good | Why it underperforms | What to do instead |
|---|---|---|---|
| Rereading the textbook | The page becomes familiar | Familiarity is mistaken for recall | Close the book, write what you remember, then check |
| Highlighting | It looks like progress | Choosing what to colour is not remembering it | Turn each highlight into a question on a flashcard |
| Copying neat notes | Produces a visible output | Mostly transcription, little retrieval | Make notes from memory, then fill gaps in another colour |
| Watching revision videos | Easy to follow | Following is not producing | Pause and answer before the presenter does |
| Doing only questions you can do | Builds confidence | Practises what is already secure | Spend most time on the questions you get wrong |
| One subject all day | Feels thorough | Massed practice fades faster | Two or three subjects a day, each returning later in the week |
Using mark schemes and examiner reports properly
Mark schemes show exactly what earns credit: the keyword, the unit, the second step of working. After every past paper, mark it yourself strictly with the scheme, then rewrite any answer that lost marks.
Examiner reports tell you where candidates as a group lost marks on each question. Cambridge publishes a selection of past papers, mark schemes and examiner reports on its syllabus pages. See, for example, the Cambridge IGCSE Mathematics 0580 past papers page. Registered schools get more through the School Support Hub, so ask your teacher for the recent ones.
Pearson Edexcel's past papers service covers International GCSE papers, mark schemes and examiner reports, with the most recent papers kept for registered centres to use as mocks.
For the IB Diploma, the IB publishes only a few sample papers free; full past papers and markschemes are sold through the Follett IB Store. IB Questionbank gives teachers questions, markschemes and subject reports mapped to the current syllabuses. It is sold as a licence, so ask whether your school has one. Subject reports are the IB's equivalent of examiner reports, and they are the fastest way to learn what a 7 looks like compared with a 5.
A simple habit: after each paper, write the three mistakes that cost the most marks at the top of a single page for that subject. By exam season, that page is your revision list.
How to revise effectively for IGCSE: a weekly routine
An IGCSE student in Year 10 or 11 usually carries many subjects at once. The risk is not lack of effort but spreading it so thinly that nothing is revisited. The routine assumes about an hour and a half on most school nights and a longer weekend session, with Friday off. Adjust the hours; keep the structure.
| Day | Session 1 (40 min) | Session 2 (40 min) | 10 min close |
|---|---|---|---|
| Sunday | Maths: mixed past paper questions, timed | Biology: blank page recall on this week's topic | Flashcards due today |
| Monday | Chemistry: self-test on last week's topic | English: one timed response to a past question | Flashcards due today |
| Tuesday | Physics: worked example, then two similar questions alone | Second language: vocabulary self-test | Flashcards due today |
| Wednesday | Humanities subject: past question, marked against the scheme | Maths: redo last Sunday's wrong answers | Flashcards due today |
| Thursday | Biology: questions from two weeks ago | Business or computer science: short past question | Flashcards due today |
| Saturday | One full past paper under timed conditions, rotating subject | Mark it strictly, then update the mistakes page | Plan next week |
Every session is retrieval or practice, and wrong answers return a few days later. In Cambridge subjects with Core and Extended tiers, practise on the tier you are entered for.
For when to shift from this weekly routine to full exam-season revision, see our term-by-term guide to the IGCSE year in Dubai. If the gap in one subject is large, the routine will not close it alone. Our IGCSE and GCSE tutoring starts from a student's past paper mistakes rather than from page one of the textbook.
IB revision tips: a weekly routine for the Diploma
The IB Diploma adds three things IGCSE students have not faced: six subjects at two levels, internally assessed coursework that runs alongside exam preparation, and the core.
Some facts, all from the IB's own guide to understanding DP assessment. Each subject is graded 7 to 1. The Diploma is awarded from 24 points, subject to minimum conditions including completion of the core. Theory of Knowledge and the Extended Essay together can add up to 3 points. Most subjects include in-school assessment tasks, either externally assessed or marked by teachers and then moderated by the IB.
So internal assessment is not a side task. It counts, and it competes with exam preparation for the same hours. Our guide to TOK, the Extended Essay and CAS covers the core in detail.
The realities of Paper 1, Paper 2 and Paper 3
The number of papers, what each tests and whether a paper is HL only differ by subject. Pull the assessment outline from each subject guide and note, for every paper, its length, weighting and question style. A short-response paper needs different practice from an essay or data-analysis paper, so practise each as its own skill. A history student who writes excellent essays can still lose marks on a source paper they have never timed.
A Diploma week in term time
| Block | Focus | Method |
|---|---|---|
| 3 weekday sessions | HL subjects, one each | One past paper question per session, marked against the markscheme, mistakes logged |
| 2 weekday sessions | SL subjects, rotating | Blank page recall on recent topics, then a short timed question |
| 1 weekday session | Internal assessment or EE | A fixed, protected slot with a written target for the session |
| Weekend, part 1 | One full paper under timed conditions | Rotate through subjects and paper types |
| Weekend, part 2 | Spaced review | Revisit topics from two and four weeks ago as quick self-tests |
| Weekend, part 3 | TOK and planning | Map next week's deadlines against the school calendar |
The protected coursework slot matters most. Students who drift usually do so because IA drafts swallow revision time in the weeks when both are due. Our IBDP subject tutoring works from markschemes and subject reports in the same way this routine does.
A note on using AI to quiz yourself
An AI chatbot helps with retrieval practice when it tests you rather than answers for you. Paste in your own notes, ask for ten short questions, answer without looking, then ask it to check your answers against the notes. Do not ask it to write your IA or essay: that is an academic integrity problem, and it skips the retrieval that makes learning stick. Our sister education brand has a sensible guide on how to use AI to study without cheating, and our own post on using AI to study well sets out what the exam boards allow.
A revision checklist to keep on the wall
- Every session includes self-testing, not only reading
- Every topic comes back at least twice more, days and then weeks later
- Maths and science practice mixes question types once a topic is learned
- Every past paper is marked strictly with the official scheme
- Lost marks go onto a single mistakes page per subject
- One full timed paper each week in the run-up to mocks and finals
- Examiner reports or subject reports are read once per subject per term
- Coursework has its own fixed weekly slot
Frequently asked questions
What is the most effective way to revise?
Testing yourself and spacing your practice over weeks have the strongest research support. In practice that means blank page recall, flashcards answered before you turn them, and past paper questions marked against the official mark scheme. Rereading and highlighting feel productive but have much weaker evidence behind them.
How many past papers should an IGCSE student do?
There is no official number. A useful pattern is one full timed paper a week in the run-up to mocks and finals, plus individual questions during the week, with every paper marked strictly and the mistakes revisited a few days later. Doing fewer papers properly beats doing many without marking them.
Is rereading notes a waste of time?
Not entirely, but on its own it is one of the weakest methods. Rereading makes material feel familiar without testing whether you can recall it. Follow any reading with a self-test from memory.
Where can I find IB subject reports and past papers?
The IB sells past papers and markschemes through the Follett IB Store. IB Questionbank, a licensed service for teachers, includes questions, markschemes and subject reports, so ask your subject teacher whether your school has access.
When should IB students start revising for final exams?
Spaced review should start in the first year of the Diploma, with each topic revisited in short self-tests after it is taught. Full timed papers matter most from the second year onwards, alongside internal assessment deadlines.
Does interleaving work for every subject?
The strongest classroom evidence is in mathematics. It is sensible for any subject where you must choose a method, such as sciences and economics, but it should be used after a topic has been learned, not while it is brand new.
Career Launcher UAE teaches IGCSE, GCSE, IBDP and A Level subjects in Dubai and Sharjah using the approach described here: past papers, strict marking against official schemes, and returning to mistakes until they stop recurring. If a student is working hard and the marks are not moving, the method is usually the first thing to look at. See IGCSE and GCSE tutoring, IBDP tutoring or A Level tutoring, or visit one of our centres.
Related reading: IGCSE exam dates, mocks and results day, term by term, IB Diploma or A Levels in Dubai and AQA, Edexcel and Cambridge compared.