You Don’t Need More Revision Hours — You Need Better Ones

Where your next 60 minutes go matters more than how hard you work.

The issue is rarely effort itself. The issue is where effort goes.

By this point in the summer, most students have put in real hours. Notes have been reread, pages highlighted, topics “covered.” And yet, for many, something quietly unsettling is true: the marks in practice papers do not reflect the hours in the revision timetable. The instinctive conclusion — from students and parents alike — is that more hours are needed.

They usually aren’t. What’s needed is better allocation of the hours already being spent.

At Better Life Tuition we call this the Effort Allocation Model. The idea is simple to state and surprisingly hard to live by: revision tasks fall into different zones. There is comfort — low-friction work that feels safe and productive: rereading notes, highlighting, revisiting topics you already know. And there is productive strain — the harder, slower work where marks are actually built: attempting questions you find difficult, testing yourself without the notes open, repairing the specific gaps that cost you marks last time.

Comfort feels like progress. Productive strain is progress. Most revision timetables are quietly dominated by the first.

What the research says

This is not just our observation from the mentoring room. It is one of the most consistently replicated findings in the science of learning.

In a well-known series of experiments, psychologists Henry Roediger and Jeffrey Karpicke compared students who repeatedly reread a passage with students who spent the same time practising recalling it from memory. A week later, the re-readers retained around 40% of the material. The self-testers retained around 61%. The harder, less comfortable strategy produced roughly half as much again — and here is the detail worth sitting with: the rereaders felt more confident. Researchers call this the illusion of competence. Rereading raises familiarity, and familiarity feels like knowledge right up until the exam asks you to produce something from a blank page.

A decade-spanning review by John Dunlosky and colleagues, published in Psychological Science in the Public Interest, reached a similar verdict across ten common study techniques. The two techniques students rely on most — rereading and highlighting — were rated among the least effective. The techniques rated most effective — practice testing and spacing work out over time — are precisely the ones that feel more difficult in the moment.

The psychologist Robert Bjork has a phrase for this: desirable difficulties. Conditions that make learning feel harder — testing yourself, spacing sessions apart, mixing topics rather than blocking them — are often the very conditions that make learning last. In revision, difficulty is frequently not the obstacle. It is the signal.

There is an everyday parallel here. Nobody expects to get fitter by watching exercise videos, however many hours they put in. The watching feels related to the goal; it’s comfortable but it’s not the thing itself. Rereading notes is the academic equivalent. The strain is where the adaptation happens.

For students: audit one week

You do not need to overhaul your revision. You need to see it clearly first.

For one week, before each session, ask a single classifying question: is this task comfort, or is it productive strain? Be honest — rereading and highlighting go in the comfort column, however necessary they feel. Attempting past-paper questions, self-testing with the notes closed, and reworking questions you previously got wrong go in the strain column.

At the end of the week, look at the split. Most students who do this discover their timetable is 70–80% comfort. That’s not a character flaw; comfort is easier to start and easier to sustain. But it does explain why the hours haven’t converted.

Then make one change: replace one vague task with one specific one. “Revise Chemistry” is a category, not a task. “Attempt the two electrolysis questions I got wrong in the June paper, then go through the method from memory” is a task — and one hour of it will likely build more than three hours of rereading the chapter.

For parents: the question that doesn’t create pressure

When a student says they have revised for hours and nothing has improved, it’s almost never a question of effort. It’s a question of allocated energy — and understanding this changes the conversation you can have at home.

Most students gravitate toward revision that feels safe. The work that builds marks is harder to start and easier to avoid, which means the summer’s hours can be entirely sincere and still poorly directed. If you have watched your child work genuinely hard for results that don’t yet reflect it, this is usually the mechanism — not laziness, and not ability.

The practical shift is in the question you ask. “Have you revised?” measures time, and time is the wrong unit. Try asking this question instead: “Which part of today’s revision was hardest?” If there’s a ready answer, the session likely included productive strain — the hardest part is usually where the marks live. If the honest answer is that none of it was hard, that is not a failure to name; it’s useful information, and a gentler opening than any amount of pressure about hours.

Before September

The final weeks of summer are not about adding hours. They are about asking a better question of the hours that remain — and carrying that question into the school year, where time gets scarcer and allocation matters more, not less.

So, one reflection to close: looking back at this summer, which of your hours produced marks — and which only felt busy?