How Many Hours Should You Study for IGCSE?

Cambridge designs each IGCSE subject around roughly 130 guided learning hours over the course, which usually runs for two years. Across nine subjects, that's more than 1,100 hours of lessons and supervised study before you do anything at home. Your own time sits on top of that, and it has to be shared between every subject you take.

For context, 15-year-olds across OECD countries reported spending about 1.4 hours a day on homework in PISA 2025. IGCSE students in their final year usually need a bit more than that, but not dramatically more, as long as the time is used well.

The short answer: hours by stage

These are guidelines, not official figures. They count focused independent study on top of lessons, homework included.

What the research says about homework time

• Homework helps, especially at secondary level. The Education Endowment Foundation's review found homework adds about five months of progress on average in secondary schools. It also found that the quality of the work matters more than the amount, and that the benefit tails off as the time keeps increasing.
• Twice a week per subject is a good rhythm. The most effective studies in that review set homework about twice a week in a subject. With eight or more IGCSEs, that's a good target for your revision too: touch every subject at least twice a week.
• Feedback makes it count. Studies where students got feedback on their homework showed bigger gains. For IGCSE, marking past papers with the official mark scheme is the easiest way to give yourself that feedback.
• Rereading doesn't cut it. A 2013 review of learning techniques led by John Dunlosky found that testing yourself and spacing out your study were far more effective than rereading and highlighting.

How many hours per subject?

In the last three months before your exams, most students need something like 15 to 25 hours of revision per subject. Not every subject needs the same amount, so rate each one and adjust:

These are planning estimates. A quick way to set your own is to rate every syllabus topic red, amber or green, then give most of your hours to the subjects with the most red.

What a 12-hour week looks like in Year 11

If you rotate subjects, that touches every one of them at least twice a week. Pair a heavy subject with a lighter one each evening, such as Maths with Geography, so you're not doing two draining subjects back to back.

What a good study leave day looks like

Study leave is where many students either do their best work or lose a week to their phone. Five to six focused hours is plenty. For example:

• 9:00 to 10:30: a timed past paper for your next exam.
• 10:45 to 11:45: marking it and adding your mistakes to your error log.
• 13:30 to 14:30: topic questions for a second subject.
• 15:00 to 16:00: a third subject, or the weakest topics from your error log.
• Evening: 20 to 30 minutes of flashcards, then stop for the day.

Once exams begin, plan each day around the next paper. If you have Chemistry on Tuesday morning, Monday is for Chemistry past papers, not a new History topic.

Is it too late? Starting in January of Year 11

Not at all. Many students only start properly after mocks. With four to five months left, a catch-up plan might look like this:

• 12 to 15 hours a week during term, with most of it on your weakest subjects.
• A full Easter holiday at five to six hours a day.
• Past papers and flashcards rather than new notes. There's no time to make things pretty.

If you're starting in March or April, focus first on the subjects that matter most, especially the ones your sixth form or next school needs for your A-Level choices.

What counts as IGCSE study time

• Counts: past-paper questions, marking with the official mark scheme, flashcards, blurting a topic from memory, and reading examiner reports.
• Doesn't really count: copying out notes, rereading, highlighting, and watching videos without doing any questions.

For the methods behind each of these, see our guide on how to prepare for IGCSE.

Mistakes that waste IGCSE hours

• Revising one subject for a whole week. By the time you get back to the others, you've forgotten half of them.
• Spending most of your time on subjects you like. It feels productive but rarely moves your grades much.
• Doing past papers without marking them. The marking is where you find out what the examiner wanted.
• Leaving practical and speaking papers until last. Alternative to Practical papers and speaking tests reward practice.
• Late nights in study leave. A fixed start time and a fixed stop time beat long, tired evenings.

Keep the count honest

With eight or more subjects, the only way to know whether each one is getting enough time is to measure it.

Start a timer when you begin real revision, stop it when you drift, and tag each session by subject. At the end of the week you'll see exactly which subjects got time and which ones quietly got skipped. That's what Group Study Timer is for. It logs focused hours by subject, keeps a daily streak, and lets you study with friends sitting the same exams. When you move on, our guide to how many hours to study for A-Levels covers the next stage.

Frequently asked questions

Sources we checked in September 2026: Cambridge on IGCSE teaching hours, the OECD's PISA 2025 results on student life and homework, the Education Endowment Foundation's evidence review on homework, and Dunlosky et al., Improving Students' Learning With Effective Learning Techniques (2013). The hour ranges are our own planning estimates, and findings are paraphrased.