Students ask for a number, so here is one to work with, followed by the reason it matters less than the shape of the time.
A workable weekly baseline
| Stage | Term time | Exam term |
|---|---|---|
| Year 12, autumn | 3–4 hours | — |
| Year 12, spring/summer | 4–5 hours | 5–6 hours |
| Year 13, autumn | 4–5 hours | — |
| Year 13, spring | 5–7 hours | 7–9 hours |
Those are ranges, not targets to beat. A student doing five well-structured hours will normally outperform one doing nine spent re-reading notes and redoing familiar questions.
What to put in the hours
- 10 minutes daily: blank-page recall of must-know results.
- Three sessions of 40–50 minutes: one weak topic each, taken to independent accuracy.
- One session: mixed-topic questions where you do not know the topic in advance.
- Every other week in Year 13: a full timed past paper, marked strictly and analysed.
Diminishing returns are real
Concentration for genuinely hard maths runs out after roughly fifty minutes. Beyond about three hours in a day, most students switch to easier, more familiar work without noticing. Two sharp sessions on five days beats one long session at the weekend.
If you are behind
Do not simply add hours. Diagnose first: attempt questions cold across the specification and rate each topic. Spending your existing hours on the three weakest topics will move a grade faster than adding two hours spread evenly over everything.