The Complete Guide to IB Past Papers — How to Use Them Effectively
IB past papers are one of the most powerful tools available to IB Diploma students — but most students use them badly. They start too late, they don't mark their own work properly, and they don't understand what the papers are actually testing. This guide explains how to use past papers effectively across every IB subject.
When to start IB past paper practice
The most common mistake is waiting until after you've "finished" the syllabus. By that point, you have weeks left before exams and no time to act on what the papers are telling you.
A better approach: start using past papers topic by topic as you learn each section of the course. After finishing the Calculus unit in IB Maths, do all the Calculus questions from the last five years of Paper 2. You'll immediately see which sub-topics you haven't actually understood yet.
Full paper practice under timed conditions should begin at least 10–12 weeks before your first exam. This gives you time to identify weaknesses and actually address them.
Which years of IB past papers to use
The IB revised many syllabuses in 2019 (with full implementation in 2020–21). For most subjects, papers from 2019 onwards are most representative of your exam. For IB Maths specifically, the 2019 course change was significant — Analysis and Approaches and Applications and Interpretation replaced the old HL/SL structure entirely.
- For IB Maths AA/AI: use papers from 2021 onwards (first examination session under the new syllabus)
- For IB Physics, Chemistry, Biology: the 2023 syllabus update means first exams are in May 2025. If you are on the new syllabus, use specimen papers and teacher-support materials — old past papers cover different content
- For IB Economics, History, Psychology: 2019 onwards is broadly applicable, but check your subject guide for any syllabus changes
- For IB English A: papers from 2021 onwards (when the individual oral replaced the old format)
How to mark IB past papers
Using past papers without properly marking them is a waste of time. The markscheme tells you what IB examiners are actually looking for — which is often different from what your teacher told you and sometimes different from what the textbook says.
When marking your own work:
- Read the mark scheme before checking your answer — understand what an ideal answer looks like, not just whether yours is right or wrong
- For extended response questions (IB Maths Problem, IB Economics 15-mark essays, IB History essays), read the level descriptors, not just the mark allocation
- Make a note of every mark you didn't get and why you didn't get it — was it content knowledge, language precision, missing a step, or time pressure?
- Keep a running list of these "why I dropped marks" notes. This list is your actual revision guide.
IB Maths past paper strategy
IB Maths has three papers (AA HL has Paper 3, an extended problem paper). Paper 1 is calculator-free; Paper 2 and Paper 3 require a GDC.
The biggest mistake in IB Maths past papers is spending too long on Paper 1 without practising calculator fluency. Most students are significantly weaker on Paper 1 — mental arithmetic atrophies when you use a calculator daily. Dedicate specific practice sessions to Paper 1 techniques.
For Paper 2, practice your GDC skills actively: graphing functions, finding intersections, numerical integration, solving equations graphically. IB mark schemes often accept GDC answers without working shown — but you must know how to operate your calculator efficiently.
IB Science past paper strategy
IB Physics, Chemistry and Biology papers each have specific question types that require different approaches:
- Paper 1 (Multiple choice, SL and HL): don't guess. Each wrong answer in multiple choice costs marks. If you cannot work out the answer, move on and return.
- Paper 2 (Short and extended answer): the command terms (state, describe, explain, analyse, evaluate) determine exactly how much you need to write. "State" requires one fact. "Explain" requires a mechanism. "Evaluate" requires evidence and a judgement.
- Paper 3 (Data analysis): you will be given data you've never seen. Practice reading graphs, identifying anomalies, calculating uncertainty, and drawing conclusions — these are transferable skills, not content knowledge.
IB Economics and Humanities past paper strategy
Economics, History, Psychology and Global Politics all have substantial extended response components. These papers reward structure and evaluation, not just factual recall.
For each practice essay, write a brief plan first (2–3 minutes maximum). Then write the response. Then mark it against the descriptors. The structure for a top-band response is consistent across IB Humanities subjects: claim, evidence, counter-claim, evaluation, judgement.
How many past papers should I do?
Quality over quantity. One past paper done thoroughly — timed, properly marked, with written reflection on every dropped mark — is worth more than five papers skimmed through without marking.
For a typical IB subject, completing four to six full past papers under timed conditions in the 10 weeks before exams, alongside topic-based practice throughout the year, is a strong approach.
For IB Maths HL or any subject where you're targeting a 7, you'll want more — eight to ten full papers over the same period, with additional focus sessions on consistently weak areas.
Where to find IB past papers
Official IB past papers are available through your school's learning management system. The IB does not officially distribute past papers to students — they are licensed to schools. However, sites like IB Documents and Revision Village (for Maths specifically) compile past questions legally or provide their own past-paper-style practice content.
Your tutor will typically have access to official past paper sets and can work through them with you in sessions.