How many hours a day should a Year 11 student revise?

On a school day in the final term, one to two hours split into short sessions is realistic. At weekends, three to four hours with breaks. During study leave, four to five hours on a day with no exam is the practical maximum for most students.

Is two hours of revision a day enough for GCSEs?

In the last two months, yes, for most students taking nine or ten subjects — provided the two hours are spent self-testing and answering exam questions rather than re-reading notes. Earlier in Year 11 it is more than most students need.

When should GCSE revision start?

Light retrieval practice on the week just taught should run all through Year 11, but the structured timetable normally starts around eight weeks before the first paper, in the second half of March. Starting a full timetable in September rarely survives to May.

My child says they have revised but their grades have not moved. Why?

Almost always because the revision is passive — reading, copying and highlighting produce familiarity without recall. Switching to closed-book self-testing and marked past-paper questions usually changes results within a few weeks, without adding a single hour.

Can you revise too much for GCSEs?

Yes. Sustained revision past about eleven at night, with no rest day, no exercise and no social contact, produces worse results as well as worse wellbeing. If hours are rising while marks stay flat, the problem is the method, not the quantity.

Guide · For everyone

How much revision is enough for GCSEs? An honest answer

In short

For most students, enough is about one to two hours per subject per week in the final term — roughly ten to fourteen hours a week across nine or ten GCSEs — ramping up from two or three hours a week at the start of Year 11 and peaking at fifteen to twenty hours a week during study leave. That range assumes the hours are spent testing yourself rather than reading, because an hour of retrieval is worth several hours of highlighting. Below is the number by phase, plus how to tell whether a student is doing too little or, less often but more seriously, too much.

By David Nunes Cuba · 9 September 2026 · 8 min read

The honest number, by phase

There is no single correct number of revision hours, but there is a defensible range, and it changes across Year 11 rather than staying flat. Anyone quoting one figure for the whole year is guessing.

Months before exams	Weekly hours	What it looks like
September of Year 11 (8 to 9 months)	2 to 3	No timetable yet. Homework done properly, plus about fifteen minutes a day testing yourself on the week just taught. This phase is almost entirely about not falling behind.
November to December (5 to 6 months, mocks)	5 to 7	Mock preparation: two short sessions per subject a week, plus past-paper questions for the papers being mocked. The mocks themselves generate the topic list for everything after.
February (3 months)	8 to 10	The timetable starts. Every topic rated red, amber or green from memory; weak topics first. Roughly one hour per subject per week, weighted towards the core.
Mid-March onwards (6 to 8 weeks)	10 to 14	Two or three sessions on a school evening, more at weekends, one full rest day. Exam questions and mark schemes rather than notes. Full papers in the last fortnight.
Study leave (final 2 to 3 weeks)	15 to 20	Four to five hours on a day with no exam, in blocks with real breaks. On a day with a paper: almost nothing afterwards beyond a light look at tomorrow.

Two adjustments to that table. A student taking eleven or twelve subjects, or sitting separate sciences rather than Combined, is at the top of each range; one taking eight is at the bottom. And a student who has kept up with homework all year needs meaningfully less in the last term than one catching up on content never properly learned the first time.

Why hours are the wrong unit

Hours are easy to count, which is exactly why everyone counts them — and why the number misleads. Two students can each do ten hours a week and get completely different results.

The difference is retrieval. Re-reading notes, copying them out neatly and highlighting all produce a strong feeling of familiarity and very little durable memory; you recognise the page rather than recall the content. Trying to produce the answer from an empty page, getting some of it wrong, and then checking is uncomfortable, slow, and is what actually moves material into long-term memory. In their review of learning techniques, Dunlosky and colleagues (2013) rated practice testing and distributed practice as the two highest-utility strategies across ages and subjects, and rated highlighting and re-reading among the lowest.

The practical consequence: forty focused minutes of self-testing beats two hours with a highlighter, and the two-hour student will report the larger number to a parent in good faith. If you are going to measure anything, measure questions attempted and marks dropped, not minutes at a desk.

What an hour of real revision contains

A genuine hour is two sessions of about twenty-five to thirty minutes, each on one topic, each ending with something written down that can be marked.

Two minutes writing down what you already remember about the topic, with everything closed.
Fifteen minutes working only on the gaps that exposed — not the parts you could already recite.
Eight minutes of questions: flashcards, past-paper questions, or a mark-scheme-marked short answer.
Two minutes noting the thing you got wrong and when you will re-test it.
Then a real break — not a break with the same screen in it.

By that definition a lot of what students count as revision is not revision, and a lot of what parents think is too little is actually enough. A teenager doing forty-five honest minutes a night in March is on track. One doing three hours a night of copying out notes in April is not, and is also heading for exhaustion.

Signs there is too little

Look at outputs, not at hours or at the state of the bedroom. These are the signals that matter, roughly in order of how strongly they predict a problem.

Nothing is ever produced. After a fortnight there are no marked questions, no flashcards, no written answers — only pages that have been read.
No topic list exists. A student who cannot name their three weakest topics in a subject has not yet started revising it, whatever the hours say.
Mock feedback was never opened. The mock paper is the single richest source of what to revise, and going straight to the grade and no further is the clearest sign of avoidance.
Whole subjects have vanished. Everything is Maths and Science; nobody has touched History since January.
Every session is on green topics. Revising what you already know is comfortable, produces a good feeling, and changes nothing.
It always starts "tomorrow". Chronic non-starting is usually not laziness — it is not knowing where to begin, and it is fixed by naming one topic, not by a longer talk about effort.

Signs there is too much

Over-revision is less common than under-revision but does more damage when it happens, and it is often praised by adults right up until it breaks. Take these seriously.

Sleep is being traded for revision. Past about eleven at night, extra revision is being paid for out of the next day, and the exchange rate is bad. Sleep is when the day is consolidated.
Meals, exercise and friends have all been cancelled. Six weeks of that reliably produces a worse April than five weeks of work with a Saturday afternoon in it.
Physical symptoms. Persistent headaches, stomach aches on Sunday nights, tearfulness before every session, or panic when a session is missed.
Hours are rising while marks are flat. This usually means the extra time is going into passive re-reading, and the answer is a different method, not more of the same.
No rest day for three weeks. A named day off each week is not a reward for good progress; it is part of the schedule that makes the progress possible.

If several of those are true at once, the intervention is not encouragement. Cut the schedule, restore sleep and one rest day, and if it does not settle within a fortnight speak to the form tutor or the GP. No set of GCSE grades is worth an anxiety disorder, and adults saying so out loud helps more than they expect.

How to raise the number without a row

If a student genuinely is doing too little, arguing about hours is the least effective available move. The things that work are all small and specific.

Agree a floor, not a target. "Fifteen minutes after dinner, every weekday" is a commitment that survives a bad day. "Two hours a night" is abandoned the first time it is missed.
Make it about the topic list. "Which topic is worst in Geography?" is a question with an answer. "Have you done any revision?" is a question with a defensive answer.
Ask to be tested. Ten minutes of a parent reading questions from the back of the book is real retrieval practice and, unusually, is also good company.
Fix the start, not the duration. Most missing revision is a missing first five minutes. A named time, a cleared table and a decided topic remove almost all of it.
Do not audit hours. Weekly hour-counting turns revision into a compliance exercise and teaches students to look busy. Ask what they got wrong this week instead.

Counting it accurately

If you do want a number, count sessions completed and questions marked, and write them on the calendar as they happen. A tally on the fridge is unglamorous and works: it is honest by construction, and it makes a bad week visible before it becomes a bad month.

Apps can do the counting instead, with the usual trade-off — accuracy in return for the app deciding what counts. FacilStudy takes the daily-floor approach rather than the hour-target one: "Today's Study" builds about fifteen minutes of work each morning across every subject and says why each item is there, so the question becomes "is today done?" rather than "how many hours this week?". On the Plus tier (£4.99 a month) a student can invite one parent or tutor as a study partner, who then sees time studied, mastery by subject and topics needing attention in a browser — and does not see the notes, the answers or the tutor chats. That is a deliberate limit: enough for a useful conversation, not a surveillance tool. FacilStudy is pre-launch, with an early-access list and more detail for parents.

Whatever you count it with, the finding underneath does not change: at ten hours a week the method matters far more than the eleventh hour would.

Common questions

How many hours a day should a Year 11 student revise?: On a school day in the final term, one to two hours split into short sessions is realistic. At weekends, three to four hours with breaks. During study leave, four to five hours on a day with no exam is the practical maximum for most students.
Is two hours of revision a day enough for GCSEs?: In the last two months, yes, for most students taking nine or ten subjects — provided the two hours are spent self-testing and answering exam questions rather than re-reading notes. Earlier in Year 11 it is more than most students need.
When should GCSE revision start?: Light retrieval practice on the week just taught should run all through Year 11, but the structured timetable normally starts around eight weeks before the first paper, in the second half of March. Starting a full timetable in September rarely survives to May.
My child says they have revised but their grades have not moved. Why?: Almost always because the revision is passive — reading, copying and highlighting produce familiarity without recall. Switching to closed-book self-testing and marked past-paper questions usually changes results within a few weeks, without adding a single hour.
Can you revise too much for GCSEs?: Yes. Sustained revision past about eleven at night, with no rest day, no exercise and no social contact, produces worse results as well as worse wellbeing. If hours are rising while marks stay flat, the problem is the method, not the quantity.