How to Study for IB Exams: A Subject-by-Subject Plan
The best way to study for IB exams is to turn each subject guide into a checklist, learn the content with spaced flashcards, and spend most of your final weeks on past papers marked against the markschemes. Start about 8 weeks out, give HL subjects more time than SL, and review a little every day instead of cramming one subject at a time. That's how to study for IB exams without losing your mind (or your 45-point dream).
If your real problem is that you've got six subjects of content and no idea what you've already forgotten, FlashDeck turns your notes into cards and shows you only the ones slipping away: Build my study plan.
How IB exams are structured (and why it changes how you revise)
IB is not one big exam. It's six subjects, each with two or three papers, plus the core (TOK and the Extended Essay) that you've mostly finished before May. Each subject is graded 1 to 7, and the core adds up to 3 points.
What that means for your revision:
- Content-heavy subjects (Biology, Chemistry, History, Psychology, Economics) reward knowing a lot of facts, definitions and examples cold.
- Skill subjects (Math AA/AI, Physics problem-solving, languages) reward practice on question types, not memorizing.
- HL vs SL matters. HL papers cover extra topics and are longer, so HL subjects usually need roughly double the revision slots.
So "study IB" is really two jobs: memorize content and drill exam skills. Most IB exam revision fails because people do one and skip the other.
Make a syllabus checklist first
Every IB subject has a published subject guide listing every topic and sub-topic. Ask your teacher for it (or check your school's ManageBac or shared drive).
Turn it into a checklist with three columns:
| Topic | Confidence (red / amber / green) | Done past paper Qs? |
|---|---|---|
| Bio: Cell structure | Green | Yes |
| Bio: Genetics | Red | No |
| Math AA: Vectors (HL) | Amber | Partly |
| Econ: Market failure | Amber | Yes |
Be brutally honest. Red topics get scheduled first. This one sheet is your whole IB study plan in a single view, and it's the thing almost every Reddit thread on how to study for IB exams says they wish they'd made in September.
Flashcards for content subjects
For anything you need to recall (definitions, processes, case studies, dates, formulas), flashcards beat rereading. Rereading feels productive because everything looks familiar. Then Paper 2 asks you to explain it from scratch and your brain goes blank.
How to study for IB biology exams with cards
Biology is where cards shine. One card per fact:
- Front: "What are the stages of mitosis, in order?" Back: prophase, metaphase, anaphase, telophase.
- Front: "Define osmosis." Back: your class definition, word for word.
- Front: "Name one example of natural selection your teacher used." Back: the example.
Keep cards small. A card with five facts on it is five cards pretending to be one.
History, Econ, Psych and other essay subjects
Card your evidence, not your essays. Dates, key studies, named examples, diagrams you need to label. Then practise writing plans from memory.
The hard part isn't making cards. It's knowing which of 600 cards you need today, across six subjects, without reviewing the stuff you already know.
FlashDeck does that tracking for you. Paste your Bio notes or a page of your study guide (up to 30,000 characters or 20 pages at a time) and it writes one card per fact, using only what you pasted. Each day it shows only the cards you're about to forget, which takes about ten minutes. Tap Missed it and the card comes back tomorrow; tap Knew it and it waits a day, then three, then longer. Build my study plan
Past papers and markschemes
This is where IB grades are won. The markscheme shows exactly what earns marks, and IB examiners are picky about command terms ("describe" vs "explain" vs "evaluate").
How to use them properly:
- Do the paper timed, closed book.
- Mark it yourself with the markscheme. Be harsh.
- Every point you missed becomes a flashcard ("Explain X" on the front, markscheme points on the back).
- Note any topic you bombed on your checklist and turn it red.
How to study for IB math exams
Math AA and AI are skill subjects. Cards help for formulas that aren't in the formula booklet, definitions, and "what's the first step when you see..." prompts. But most of your time should be question practice: topic questions first, then full papers. Learn your calculator (GDC) inside out, because fumbling with it costs real minutes.
An 8-week IB study schedule
How long to study for IB exams? Around 8 weeks of structured revision is a solid target, with roughly 3 to 5 focused hours on school days in the final month and more on weekends. Adjust to your energy, not someone's TikTok "12 hours a day" flex.
| Weeks | Focus | Daily habit |
|---|---|---|
| 8–7 | Finish checklist, make cards for red topics | 10-min card review |
| 6–5 | Topic-by-topic past paper questions, HL first | 10-min card review |
| 4–3 | Full timed papers, one or two a day | 10-min card review |
| 2–1 | Weakest topics, markscheme phrasing, sleep | 10-min card review |
How to study for IB exams in 1 month
Skip making beautiful notes. Use your checklist, card the red topics only, and start past papers in week one. Two subjects per day, alternating HL and SL.
How to study for IB exams in 2 weeks
Triage. Past papers for every subject, mark them, card only what you got wrong, and review those cards daily. Prioritize HL subjects and anything worth the most marks. It won't be perfect, but it's way better than rereading your whole binder.
How to study for IB mock exams
Treat mocks as the dress rehearsal. Same method, shorter timeline: checklist, cards, two past papers per subject. Then use your mock results to reorder your checklist for the real thing. Same logic as UK students in do Year 13 mocks matter.
Exam session tips for IB final exams
- Read command terms twice. "Evaluate" wants a judgment, not a description.
- Watch the marks. A 2-mark question needs two points. Don't write an essay.
- Sleep beats one more hour. All-nighters wreck recall the next morning.
- Keep reviewing during the session. Ten minutes of cards between papers keeps later subjects fresh.
- Pack the night before. GDC, charger or batteries, ID, pens, water.
If your session lands after a winter break, the same "little and often" idea from our winter break study schedule works for IB too.
Your IB revision, sorted in the next minute
You don't need a perfect plan to start. Paste one subject's notes, get a card for every fact, and let ten minutes a day keep it all from fading before May. That's the best way to study for IB exams when you've got six subjects fighting for your attention.
FAQ
What is the best way to study for IB exams?
Combine three things: a syllabus checklist so you know what's left, spaced flashcards for content, and timed past papers marked with markschemes. Most students overdo notes and underdo papers. Flip that ratio in the last month.
How long should you study for IB exams?
Aim for about 8 weeks of structured revision before May (or November). In the final month, a few focused hours on school days plus longer weekend sessions is realistic. Consistency matters more than marathon days.
How do you study for IB exams in 2 weeks?
Do one past paper per subject straight away, mark it, and only revise what you got wrong. Card those gaps and review them daily. Prioritize HL subjects and high-mark topics.
What does Reddit say about how to study for IB exams?
The common advice on r/IBO is past papers, past papers, past papers, plus learning the markscheme language. That's solid. The missing piece is a system for content recall, which is where spaced flashcards come in.
How do I study for IB math exams vs IB biology exams?
Math is mostly practice: topic questions, then full papers, plus knowing your GDC. Biology is mostly recall: definitions, processes and examples on flashcards, then past papers to learn how answers are marked.