You can feel it the moment the week begins: six subjects, deadlines that multiply overnight, and the quiet fear that everyone else has a better plan.
In the IB, the question isn’t “How many hours should I study?” It’s “How many hours can I study consistently without burning out?” Because consistency is what turns effort into marks.
A realistic weekly study checklist for the IB
Use this as your baseline outside of school hours (then adjust for deadlines):
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SL subjects: 2-3 hours per week, per subject
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HL subjects: 3-5 hours per week, per subject
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TOK + EE + CAS: 1-2 hours total per week (minimum to keep momentum)
For a typical 3 HL + 3 SL schedule, that’s roughly 16-22 hours per week outside class, or about 2-3 hours per day with a lighter day built in.
If you want a fuller routine template, borrow ideas from What Is a Standard IB Schedule? and How to Create a Balanced IB Study Schedule.
IB study hours by subject type (and why they vary)
Not all IB hours are equal. Some subjects reward steady repetition. Others reward writing practice. Here’s a realistic way to think about it.
IB Math (AA or AI): frequent practice beats long sessions
Math improves when your brain sees patterns often.
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Aim for 3 short sessions/week (45-60 minutes)
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Spend at least half the time on exam-style questions
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Keep a small “mistake log” and revisit it weekly
RevisionDojo makes this easy with the Questionbank and the loop described in RevisionDojo App: The Smarter Way to Prep for IB Exams.
IB Sciences (Biology, Chemistry, Physics): content + application
Sciences often feel like “I understand it” until a question asks you to apply it.
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Plan 2 content sessions (notes + recall)
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Add 1-2 practice sessions (structured questions)
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Reserve time for IA progress during heavy coursework weeks
Use Digital IB Study Notes for fast topic refresh, then lock it in with IB Flashcards with Spaced Repetition.
IB Humanities (History, Economics, Geography): writing is the revision
In essay-based subjects, your bottleneck is usually structure, evidence, and timing.
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Split time into reading/notes and timed writing
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Do at least one timed response weekly even early in the year
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Review markscheme language and common command terms
When you need exam realism, build stamina with How to Study for IB Mocks (Without Burning Out) and use RevisionDojo’s Mock Exams and Grading tools to see where marks disappear.
IB Languages (A and B): small daily effort compounds
Languages reward shorter, more frequent exposure.
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Do 15-25 minutes most days (vocab, grammar, reading)
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Add one writing task weekly
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For orals, practise speaking in small, low-pressure reps
Flashcards are perfect here: see IB Flashcard System: Active Recall for Better Memory.
How IB study hours change across the year
Your IB hours should flex with the calendar:
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Normal weeks: keep the baseline (16-22 hours/week)
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IA deadlines: temporarily shift hours toward that subject (and reduce elsewhere)
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Mock season and exam build-up: increase gradually, not overnight
If you’re mapping the ramp-up, How Long Did It Take to Study for the IB Exams? gives realistic ranges.
The takeaway: pick IB hours you can repeat
The best IB schedule is the one you can sustain when you’re tired, busy, and slightly behind. Start with a realistic weekly total, split it by HL vs SL, and protect your sleep.
When you’re ready to make those hours count, RevisionDojo brings your prep into one system: Questionbank, Study Notes, Flashcards, AI Chat, Grading tools, Predicted Papers, Mock Exams, a Coursework Library, and Tutors when you want human feedback. Spend the same hours, but get more progress out of them.