It may be the most common sentence spoken at parent-teacher meetings: “My child understands everything. They just can’t score.” It’s said with frustration, and sometimes with a little pride — the child is bright, the marks are lying.
Here’s what’s worth knowing: that sentence describes four different children, and they need four different kinds of help.
“Understands” is doing a lot of quiet work in that sentence. There’s the child who nods along when a solution is explained — everything makes sense while someone else is doing it. There’s the child who can solve the problem they practised, but not the same problem wearing different clothes. There’s the child who can do every step, but loses the thread when four steps have to be chained together. And there’s the child who truly does know it all — and loses marks to slips, time, and presentation.
From the outside, all four look like “understands but can’t score.” From the inside, they’re losing marks in completely different places, and the fix for one does nothing for another. Extra revision won’t help the child whose problem is chaining steps. Practice papers won’t help the child who only ever recognised the idea and never actually reproduced it alone — that child doesn’t need more exams; they need to discover, safely and early, that following is not the same as doing.
That’s the first thing we believe: lost marks always have a findable cause. Not a character flaw — a cause. “Careless” is almost never the real diagnosis; it’s the name we give a pattern we haven’t looked into yet. When you look, something specific is always there: a step that was never truly owned, a kind of question never met before, a habit of starting to write before reading the whole problem. Specific things can be fixed. Verdicts can’t.
The second thing we believe is less comfortable, but it matters: in a well-made exam, marks and understanding are not enemies. They’re the same thing, measured. When a child genuinely understands — can produce, not just follow; can handle the unfamiliar framing — the marks follow. Where a test rewards memorised answers over real understanding, that’s a defect in the test, and those questions are worth naming for what they are. But most of the gap most children experience is not the exam’s fault. It’s one of those four gaps above, wearing “exam pressure” as a costume.
There is one honest exception: exam format has its own friction. Time limits, mark schemes, the expected shape of an answer — these are skills of conversion, not understanding, and a child rich in understanding can still pay a tax converting it to marks. That tax is real, and it’s removable — not by drilling rote, but by making the format familiar enough that it stops costing anything. Format practice, in other words, is for removing friction — never a substitute for the understanding itself.
So when we build our books, the target is blunt: the teaching must be complete enough that understanding converts to marks — with the book itself never the reason it doesn’t. That means the child produces before the book confirms. It means practice that visits the same idea in unfamiliar clothes, because that’s where “recognises” gets exposed and repaired. And it means treating every lost mark, in practice, as information about what to do next — never as a measurement of the child.
“Understands but can’t score” isn’t a paradox, and it isn’t a personality. It’s a diagnosis waiting to be made. Make it, and the marks stop being mysterious.