TL;DR — 12 weeks is the optimal GCSE maths revision window. Start with a diagnostic past paper, follow a topic-by-topic schedule for eight weeks, then spend the final four weeks on mocks and targeted weaknesses. Forty minutes per day on weekdays (plus one longer session at weekends) is enough to move up one or two grade boundaries.

Twelve weeks before your GCSE maths exam is exactly the right moment to start revising in earnest. Not because you should panic, but because twelve weeks gives you something invaluable: time to cover every topic, sit two full practice papers, fix your weak spots, and still sleep properly the night before Paper 1.

In my 10 years tutoring Year 11 students in London and the South East, the students who made the biggest gains weren't necessarily the cleverest. They were the ones who started in March, stuck to a plan, and treated past papers as learning tools rather than tests to dread. This guide gives you that plan, adapted for AQA, Edexcel and OCR specifications.

Why 12 weeks is the GCSE maths revision sweet spot

Most students sitting GCSEs in June should begin structured revision in early March. Here's why twelve weeks works when shorter windows don't.

GCSE maths covers roughly 90 distinct topics across the Ofqual-approved specifications. Even at one topic per day, five days a week, you need 18 weeks to cover everything once. Twelve weeks forces you to prioritise — which is exactly what good revision does. You can't revise everything equally; you have to focus on the topics worth most marks and the ones you find hardest.

The other reason is spaced repetition. Topics covered in Week 2 will feel stale by Week 9 unless you revisit them. A 12-week plan with built-in review cycles (the mock papers in Weeks 8 and 11) naturally spaces your practice. According to the Education Endowment Foundation, spaced practice has an effect size of +5 months of additional progress compared to massed practice. That's not a small difference at grade boundaries.

One Year 11 student I tutored last spring started with a grade 4 prediction and finished with a grade 6 on AQA Higher. She didn't study for hours every night. She studied 40 minutes every weekday and an hour at the weekend, following a plan almost identical to the one below. Regular contact with the material — not occasional intensity — was what moved her grades.

Understanding which exam board you're sitting

Before Week 1, confirm which specification you're entered for. The three main boards — AQA, Edexcel (Pearson) and OCR — all follow the national curriculum and award grades 1–9, but they have stylistic differences in question wording that matter in the final weeks.

AQA (most common, used by around 50% of UK schools) is known for multi-step problem-solving questions that require you to string together several methods. Grade 7+ students often say AQA questions "hide" the method you need to use.

Edexcel questions tend to be more direct in the early marks before ramping up difficulty. The non-calculator Paper 1 typically front-loads easier marks, which rewards students who have practised arithmetic fluency.

OCR includes a "problem-solving" strand that explicitly tests mathematical reasoning rather than pure procedure. You will see more "show that..." and "explain why..." questions.

Check with your teacher or look at your predicted-grade letter — your school's exam entry will confirm the board. Then download the past papers from that board only. Mixing AQA and Edexcel papers is fine for topic practice, but for timed mocks, use your own board.

You can access all past papers, mark schemes and examiner reports free from the AQA, Edexcel and OCR websites.

Your 12-week GCSE maths revision schedule

Weeks 1–7: Topic coverage

Week 1 — Diagnostic and foundations

Before you revise, find out what you actually need to revise. Sit a full past paper in one sitting, without notes, under timed conditions (1 hour 30 minutes for each paper if you're doing Higher; adjust for Foundation). Mark it using the official mark scheme. Write down every topic where you lost marks. This list becomes your Week 1 priority order.

Spend the rest of Week 1 on number: integers, decimals, fractions, percentages and standard form. These appear in every paper. A weak percentage calculation in Paper 2 can lose you 4 marks before you've even reached algebra.

Week 2 — Ratio, proportion and rates

Ratio and proportion questions are worth around 20-25% of the Higher tier paper. Direct and inverse proportion, currency conversions, recipes, speed-distance-time: these look easy but trip up students who haven't practised the exact method. Spend at least one day on compound measures and converting between units.

Week 3 — Algebra foundations

Linear equations, rearranging formulae, expanding single and double brackets, factorising. If you're on Higher, add inequalities and set notation (the number line questions). One session every day, finishing with 20 minutes of mixed algebra exam questions to consolidate.

Week 4 — Algebra applications

Quadratics are worth more marks than any other algebra topic at Higher. Cover solving by factorising, the quadratic formula, and completing the square. Add algebraic fractions and proof. These distinguish Grade 6 from Grade 7.

Week 5 — Geometry Part A

Angle rules in parallel lines, triangles, polygons. Congruence and similarity. Circle theorems — this is where many students lose a guaranteed 3 marks because they haven't memorised the eight key theorems. Write them out, draw diagrams, test yourself on each one.

Week 6 — Geometry Part B

Area, perimeter, volume and surface area of all standard shapes. Right-angled trigonometry (SOHCAHTOA), Pythagoras in 2D and 3D, and — for Higher — the Sine Rule and Cosine Rule. Vectors and transformations if you're on Higher.

Week 7 — Statistics and probability

Mean, median, mode from frequency tables and grouped frequency tables. Cumulative frequency and box plots. Histograms (frequency density — this confuses almost everyone the first time). Probability: tree diagrams, Venn diagrams, conditional probability at Higher.

Week 8: First full mock

Sit the three papers — Paper 1 (non-calculator), Paper 2 (calculator), Paper 3 (calculator) — on three separate days. Use your board's past paper. Strict timing. No phone, no calculator on Paper 1.

Mark each paper against the official mark scheme. Calculate your total. Then look up the grade boundaries for that past paper on your exam board's website. Grade boundaries vary year to year, but the examiner reports give you a realistic sense of where you stand.

Make a new list of weak topics. These are your Week 9 focus.

Weeks 9–11: Targeted revision and second mock

Week 9 — Attack your weaknesses

Take the topics from your Week 8 mock where you dropped the most marks. Spend 80% of the week's revision time there. If you can't crack a topic after three sessions of practice, that's the moment to ask your teacher, use a tutoring platform like EduBoost, or watch a worked-solution video and then attempt the question again from scratch.

Week 10 — Calculator vs non-calculator discipline

Paper 1 (non-calculator) requires different habits from Papers 2 and 3. On Paper 1, practise:

Mental arithmetic shortcuts (percentage of a number without a calculator, multiplying by fractions)
Leaving answers in exact form (surds, π expressions)
Estimation to check your answers make sense

On Papers 2 and 3, practise using your calculator efficiently — particularly for trigonometry, standard form and statistical calculations. Students who fumble the calculator lose time and marks on questions they actually know.

Week 11 — Second full mock

Repeat the Week 8 process. Compare your total to your first mock. Most students who follow this plan gain 8–15 marks between mocks. If you haven't gained marks, your Week 9 targeted revision wasn't specific enough — pinpoint which exact question types are dropping marks, not just which topics.

Week 12: Exam technique and final preparation

No new topics in Week 12. This is purely about exam technique:

Read each question twice before picking up your pen
Show every step of your working, even on obvious calculations — mark schemes award method marks
If you're stuck on a question, write something: the formula you'd use, the first step, anything that earns a method mark
Circle questions you've skipped and return to them in the final 5 minutes
Check your answers using a different method where time allows

Practise under strict time conditions every day this week. By the time you sit Paper 1, you should have done the entire exam experience — question reading, working, checking — at least 12 times. Familiarity removes anxiety.

Calculator vs non-calculator: the Paper 1 trap

Every year, students lose easy marks on Paper 1 not because they don't know the maths but because they've only ever practised with a calculator. In a classroom, most maths work happens on Paper 2-style problems. Paper 1 demands mental agility that needs specific practice.

Spend one session per week from Weeks 3 onwards working through Paper 1-style questions without picking up your calculator even once. Key skills to build:

Multiplying and dividing decimals mentally
Calculating percentages of amounts (e.g. 17.5% of £240) without a calculator
Simplifying surds (√50 = 5√2)
Knowing square numbers, cube numbers and prime factors without looking them up

If you can pass a Paper 1 without a calculator, Papers 2 and 3 feel straightforward.

Understanding grade boundaries

Grade boundaries for GCSE maths are not fixed. They shift every year based on how difficult the paper was and how students nationally performed. In June 2024, the AQA Higher paper grade 4 boundary was around 26% of marks. The grade 7 boundary was around 62%.

What this means practically: you don't need to get everything right to achieve a strong grade. At Higher tier, a student scoring 65% is likely achieving Grade 7. A student scoring 40% is likely at Grade 5.

Check the examiner reports from the last three years for your board. They show which questions students found hardest nationally. If a question type appears in the "common mistakes" section year after year, treat it as a priority.

Tools and resources for GCSE maths revision

Past papers — The single most important resource. Do them under timed conditions from Week 8 onwards. Before Week 8, use individual questions from past papers for topic practice.

Mark schemes — Read the mark scheme after every question you attempt. Understanding why an answer gets full marks (often including "correct method even if arithmetic error") changes how you approach questions.

Revision notes — Write your own. Not copying from a textbook but condensing a topic to one page: key formula, worked example, common mistake. One student I tutored laminated her one-page notes for each topic and reviewed them on the bus.

AI tutoring platforms — For students who need immediate feedback on worked solutions, platforms like EduBoost allow you to work through problems with AI-guided hints rather than just seeing answers. This is particularly useful for algebra and geometry, where understanding the method matters more than getting the right number.

Study techniques — Know what spaced repetition and active recall actually mean and how they apply to maths revision. These aren't edu-jargon — they describe specific mechanisms with solid evidence behind them. Our guide to effective study methods covers both in detail.

Common mistakes to avoid

Starting too late. Six weeks is not enough time for most students. You can pass with six weeks, but you cannot develop the fluency and confidence that a 12-week plan builds.

Only revising topics you find easy. Students naturally gravitate toward what they're already good at. Force yourself to sit with a difficult topic for 40 minutes even when it's uncomfortable. That discomfort is learning happening.

Not reading the mark scheme. Getting an answer right without understanding why is a false positive. Reading the mark scheme shows you the exact language and working the examiner expects.

Neglecting Paper 1. Non-calculator practice is not optional. Build it into every week from the start.

Revising without testing. Reading notes is not revision. Active recall — closing the book and writing out what you remember — is. Every revision session should end with an attempt to reproduce key facts or work through a problem without notes.

Adapting the plan for Foundation and Higher

This plan is written primarily for Higher tier (Grades 4–9). If you're sitting Foundation (Grades 1–5), the topic list is narrower but the revision principles are identical. On Foundation, focus especially on:

Number (carries more weighting)
Basic algebra (linear equations, simple formulae)
Shape properties and basic trigonometry
Statistics and handling data

If you're borderline between Foundation and Higher, talk to your teacher. Sitting Higher with a Grade 4 offer gives you a safety net; sitting Foundation caps you at Grade 5 even if you perform exceptionally.

Frequently asked questions

How many past papers should I do for GCSE maths?

At minimum: one diagnostic paper in Week 1, one full mock in Week 8, and one full mock in Week 11. That's six papers in total (each exam has three). Ideally, also use individual papers from additional years for topic practice in Weeks 2–7. AQA has papers going back to 2017; that's eight years of material.

Do I need to buy revision guides?

No. All past papers and mark schemes are free from the exam board websites. Your school will have the textbook. Where revision guides help is in providing concise summaries — but you can create your own, which is actually better for memory.

Which topics come up every year on AQA GCSE maths?

Based on the last six years of AQA Higher papers: algebra (every paper, multiple questions), ratio and proportion (every paper), area and volume (every paper), probability (every paper), and transformations (every paper except one). These deserve the most revision time.

How do I work out which grade boundary I'm targeting?

Download the grade boundary table from your exam board's website for the last three years. Average the boundaries to get a realistic target. For AQA Higher in June 2025, Grade 5 was approximately 34–38% of marks. Grade 7 was approximately 58–63%.

What if I'm predicted a Grade 4 but want a Grade 6?

Two grades in one sitting is achievable with 12 weeks of focused work, but it requires identifying exactly which topics are holding you back. The diagnostic paper in Week 1 is critical. If algebra is your main weakness, spending 50% of Weeks 3 and 4 on algebra alone can add 15–20 marks to your total.

Starting now matters more than starting perfectly

The students who regret their GCSE maths result are almost always the ones who convinced themselves they had more time than they did. Twelve weeks from your exam date is the moment to open your first past paper.

Don't wait until you feel ready, or until you've found the perfect revision guide. The plan above is the guide. The past paper is the starting point. The first session won't feel productive — that's normal. By week four, it will.

If you want to accelerate beyond what self-study alone provides, EduBoost's GCSE maths tutoring adapts to your specific weak topics and works through past paper questions with guided hints rather than answers. Available at any hour, at a fraction of the cost of private tuition.

GCSE Maths Revision Plan: 12 Weeks to Exam Day