How Long Should I Revise for Each IB Subject?

When to start serious revision

Aim to begin structured exam revision around four months before final exams. At this stage, you should be mapping out weekly hours, topic coverage, and deadlines for Internal Assessments and coursework.

How to organize subjects

Some students prefer dedicating specific days to specific subjects, while others pair two subjects per day for variety. Both approaches work as long as you maintain balance and consistency.

The key is not the exact layout, but that every subject receives regular attention.

Intensive Revision Periods Before Exams

In the final four to six weeks before exams, revision intensity should increase.

This is the time to:

• Consolidate content
• Focus heavily on exam-style questions
• Identify and fix recurring weaknesses

Some students benefit from occasional “immersion days,” where they spend most of the day focused on one or two subjects. These should be followed by lighter review days to avoid burnout.

Quality Matters More Than Total Hours

It’s important to remember that not all revision hours are equal. Ten hours of passive reading is far less effective than five hours of active, targeted study.

Effective revision prioritizes:

• Understanding over memorization
• Practice over rereading
• Feedback over repetition

This is why structured platforms like RevisionDojo emphasize active learning and exam alignment rather than raw time spent.

Example: A Balanced Weekly IB Revision Load

For a typical IB student taking three HL and three SL subjects:

• HL subjects: 3 subjects × 7 hours = 21 hours
• SL subjects: 3 subjects × 5 hours = 15 hours

That’s approximately 36 hours of revision per week, not including time for TOK, the Extended Essay, Internal Assessments, or CAS. In Year 2 especially, these core components must be factored into your weekly plan.

Customizing Your Revision Schedule

No two IB students need the exact same schedule. You should adjust weekly hours based on:

• Subject difficulty: weaker or content-heavy subjects may need more time
• Personal strengths: stronger subjects can often be maintained with fewer hours
• Syllabus demands: subjects with more exam papers or longer exams deserve priority
• Deadlines: revision should peak around exams, IAs, and coursework submissions

Flexibility is a strength, not a weakness, as long as structure remains.

How to Maximize Study Efficiency

To get the most out of your revision hours:

• Use active learning methods such as flashcards, quizzes, and mind maps
• Practice with past exam questions to learn timing and mark schemes
• Review mistakes carefully and track patterns over time
• Use study groups selectively for explanation and accountability
• Maintain healthy routines with sleep, exercise, and breaks

Revision works best when your brain is rested and consistent.

Why This Framework Works

This approach succeeds because it combines structure with flexibility.

Regular weekly hours reduce last-minute stress. Balanced subject coverage prevents neglect. Active revision methods improve retention. And built-in flexibility allows you to adapt when deadlines or difficulties change.

It’s not about studying constantly—it’s about studying intentionally.

Final Advice

Start planning your revision at least four months before exams. Aim for 6–8 hours per HL subject and 4–6 hours per SL subject each week. Focus on active recall, exam practice, and spaced repetition. Track progress weekly and adjust as needed. Most importantly, protect your well-being so your effort is sustainable.

Call to Action

For structured study plans, active revision tools, and subject-specific IB support, explore RevisionDojo. With personalized schedules, flashcards, practice questions, and guided resources, you can study smarter, stay consistent, and push confidently toward top IB scores.

Learn how IB schools use the official exam timetable internally and what it means for students during exams.