A mock can be a recycled past paper, a board-written paper, or something the school wrote itself — and only one of the three comes with a real, published grade boundary.
Book a Free ConsultationA GCSE mock exam is not always a recycled past paper. Most schools reuse a previous year's live exam as the mock, but some board-run Mocks Service papers, such as Pearson's Secure Mocks Set 7, 8 and 9, are written and marked by the exam board itself, never sat as a real national exam. Pearson's own guidance states these Secure Mocks Set Maths papers carry no official grade boundary at all, because they never go through an awarding process.
A mock grade means something different depending on which of the three papers produced it. Our expert GCSE tutors read the actual marked script — not just the grade — to show how close it really is to a genuine boundary, whichever board or paper type your child sat.
Book a Free Consultation Message us on WhatsAppMost of the time, yes — but not every GCSE mock is a past paper, and the exception is the part almost nothing written about mocks explains. A mock paper can be any one of three different documents. It can be a genuine past exam paper, the same one a previous cohort actually sat, reused by the school before the exam board releases it publicly. It can be a paper the exam board itself writes and sells specifically for mock use, never sat as a real national exam by anyone, such as Pearson's Mocks Service papers. Or it can be a paper the school's own department has written from scratch, with no exam board involvement at all.
On the sheet that comes home, all three look the same: a subject, a mark, a grade. Nothing on the paper itself tells a parent which of the three it was, and schools do not always explain, even when asked directly. One parent asking her child's school this exact question, on a public Mumsnet thread, got nowhere: "We were told the school could test using past papers or mock set papers for maths. I did ask what's the difference. I got no reply." The rest of this page answers the question that parent never got answered.
| Type of Mock Paper | Who Wrote It | Who Marked It | Official Grade Boundary? |
|---|---|---|---|
| Genuine past paper | The exam board, as a real live exam sat by a previous cohort | The school, against the board's published mark scheme | Yes — a board-published notional boundary |
| Board-written Mocks Service paper | The exam board (e.g. Pearson), written to spec but never sat as a real exam | The board's own examining team, under live-exam standardisation | Confirmed no for Pearson — an indicative figure only |
| School-written paper | The school's own department, in-house | The school, against its own mark scheme | No — no board involvement at all |
Source: Pearson Mocks Service and FAQ pages (verified below); AQA notional boundary guidance (verified below).
When the mock genuinely is a past paper, the mechanism is simple: schools commonly reuse the previous year's live exam before the board makes it public, which is also why the paper is usually treated as restricted material rather than something a child keeps. Each exam board runs its own security rule for exactly how long, and how the retention question plays out once a mock has been sat is covered in full, board by board, in our companion piece on whether a GCSE mock paper can come home. This page picks up a different question: not whether the paper can come home, but whether it was ever a genuine past paper to begin with.
Pearson runs a distinct product for exactly this purpose. Its own description is direct: "The Pearson Edexcel Mocks Service provides schools and colleges with GCSE, International GCSE and A level exams for use in mocks." A school orders these papers specifically to use as a mock. They are written to the same specification as the live exam, but they have never been sat as a real national paper by any cohort, anywhere.
Nor are they marked by the class teacher. Pearson states plainly that "the mocks will be marked by our expert examining team," following "a standardisation process, as they do for the live exams, to ensure all exams are marked to the same standard." That is a materially different process from a department marking its own past-paper mock against a published mark scheme: the same organisation that sets and marks the real GCSE is setting and marking this one too, under the same quality controls. On paper, it can look like the most rigorous kind of mock available. What happens to the grade at the end of that process is not what that rigor would suggest.
Whichever kind of paper set the mock, the marking behind it is what tells you something. Our GCSE subject tutors work from the actual script, board by board, to turn a mock result into a focused plan before the real exam.
Book a Free Consultation Message us on WhatsAppNo — and this is the fact that changes what the grade on the sheet actually means. Asked directly whether there are grade boundaries for its GCSE Maths Secure papers, Pearson's own Mocks Service FAQ answers: "There are no specific grade boundaries for any Secure Mocks Set Maths (Mock set 7, 8 or 9) as these do not go through an awarding process. We do have indicative grade boundaries for GCSE Maths that centres can use and these are available on the qualifications website."
Read that carefully, because the two sentences are doing different work. The first says there is no official boundary: the paper was never awarded, so nothing was ever set for it the way a real exam series is. The second offers a fallback — an "indicative" figure, borrowed rather than derived from this specific paper's own results. A school using a Secure Mocks Set paper is not applying the wrong boundary; it is applying a boundary that was never meant for this paper in the first place, because none exists.
Contrast that with a genuine past paper. Every board — Pearson, AQA, OCR and WJEC/Eduqas alike — publishes a "notional" component grade boundary for its real past papers, drawn from how that specification's actual live results came out. AQA's own guidance explains the term precisely: "Although there are no official grades for individual components in linear qualifications, it can be useful for students and teachers to see how the overall subject grade was achieved. The grade boundaries given for each component are known as notional grade boundaries, as they are for illustrative purposes only." Notional is not the same as absent. A notional boundary is still derived from a real, awarded set of national results; a Secure Mocks Set boundary is not derived from anything at all, because the paper it would apply to was never a national exam.
This distinction is not new, even if no page appears to have stated it plainly before now. A 2021 reply on the same Mumsnet thread describes exactly this split, years before Pearson's FAQ confirmed it in these terms: "The difference will be one set of papers will have been used nationally in a proper exam (but may be available on the internet) and the other will have been created by Edexcel to the same spec as a proper exam but it hasn't been used as an official paper. There will be proper grade boundaries available for a past paper, but guesswork for a non-past paper." A parent worked out the mechanism from first principles four years before the exam board's own FAQ said close to the same thing — which says something about how quietly this distinction has sat, unpublished, the whole time. How a school applies a genuine past paper's notional boundary, and why an A in a mock can slide to a B or C in the real exam even when the paper was real, is covered in full in our piece on why mock grades drop in the real exam.
There is a third case, and it sits a step further out again: a paper with no exam board involvement of any kind. Some departments write their own mock papers from scratch, with their own questions and their own in-house mark scheme, calibrated by the teachers who wrote it rather than against any board specification. Nothing about that is dishonest or unusual — teachers know their own cohort and can target gaps a generic mock cannot reach.
But it means the grade printed on a school-written paper rests on a foundation with no exam board behind it at all, not even the loose, indicative fallback Pearson names for its own board-written papers. A parent reading two mock results side by side, one from a board-written Secure Mocks Set paper and one the department wrote itself, cannot tell which is which from the grade alone. Both can say the same grade with equal confidence and rest on very different ground: one on an indicative figure borrowed from elsewhere, the other on nothing published anywhere at all.
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A mock is a starting point, not a verdict. Our specialist GCSE tutors build a revision plan around exactly what a mock paper shows was lost, on any board and any paper type.
Book a Free Consultation Message us on WhatsAppThe honest answer is that a parent cannot tell from the paper or the grade alone — the only reliable route is to ask, and to ask a specific question. "Can I have the mark scheme?" or "What boundary did you use?" tends to get a vaguer answer than a direct question about the paper's origin. Two questions get further: who wrote this paper — was it a genuine past exam, an exam board's own mocks product, or something the department wrote itself — and who marked it, and against what boundary?
The Mumsnet parent quoted earlier had already tried an open version of the first question and been met with silence. Naming a real product makes the question harder to sidestep: asking "was this a Pearson Mocks Service paper, or last year's actual exam?" asks for a fact the school either knows or does not, rather than inviting a vague reassurance about the paper being broadly similar to a past one. If the school cannot answer, that is itself useful information — it usually means nobody in the department checked before setting it.
It matters most when a family is using the mock grade to make a real decision — choosing a tier of entry, deciding whether extra tuition is needed before the real exam, or judging how close a borderline grade actually is. A grade built on a genuine past paper's notional boundary is the closest a mock can get to the real thing: it is derived from how an actual national cohort performed. A grade built on Pearson's indicative fallback for a Secure Mocks Set paper is a reasonable estimate, offered by the board itself as exactly that — an estimate, not a result. A grade from a paper with no board involvement at all rests on the school's own judgement alone, which may be well calibrated for that cohort but is not checked against any national standard.
None of the three is worthless. A mock's real value was never only the grade — it is what the paper reveals about which topics and question types went wrong, and that stays true whichever kind of paper produced it. But the grade itself carries different weight depending on which of the three it came from, and that weight is exactly what most advice a family finds skips over entirely: it treats every mock grade the same, as though the words "past paper" or "mock" told the whole story on their own.
Whatever the boundary turns out to be, the gap it reveals is real. Our expert GCSE tutors close it — subject by subject, board by board — ahead of the real exam.
Book a Free Consultation Message us on WhatsAppThe board-written, no-boundary pattern described above is confirmed here for Pearson specifically, from Pearson's own published Mocks Service FAQ. This research did not find an equivalent named product at AQA, OCR or WJEC/Eduqas — no board-run mocks service paper, written and marked by the board itself outside the live exam series, in the way Pearson operates one for GCSE Maths.
That is not the same as saying the other three boards have no such thing. It means this specific piece of research did not find one, which is a narrower claim. What is publicly confirmed for all four boards is the separate security model behind a genuine past-paper mock — each restricts access to its own recently sat papers for a period before public release, covered board by board on our companion page about bringing a mock paper home. What is confirmed only for Pearson, and only for its GCSE Maths Secure Mocks Set, is the no-boundary product itself. Treat the distinction between a past paper and a board-written mock as worth asking about at any board; treat the specific "no boundary at all" finding as verified at Pearson, and unconfirmed, not disproved, everywhere else.
Whichever of the three papers produced the grade on the sheet, the single most useful next step is the same: get someone who knows the subject to read the actual marked script, not just the number at the top of it. A subject specialist looking at the working can usually tell, from the pattern of marks lost, whether a grade sits close to a genuine boundary or was always going to be soft, regardless of whether that boundary was real, indicative, or entirely the department's own judgement. Our GCSE mock paper review does exactly that: a subject specialist works through the actual script, not just the grade printed at the top of it.
No. Most mocks are a genuine past paper reused before the exam board releases it publicly, but some are papers the exam board writes and marks specifically for mock use, and others are written entirely by the school itself. Pearson runs a named product for the second case, its Mocks Service, supplying GCSE, International GCSE and A level papers for schools to sit as mocks. All three types can carry the same-looking grade on the sheet that comes home, which is exactly why the distinction matters and is worth asking about directly.
It is Pearson's own product for schools that want a mock paper which was never sat as a real national exam. Pearson describes it directly: "The Pearson Edexcel Mocks Service provides schools and colleges with GCSE, International GCSE and A level exams for use in mocks." A school orders these papers specifically for mock use, and Pearson states they are marked by its "expert examining team" under the same standardisation process used for the live exams, not by the class teacher against a generic mark scheme.
Not always, and Pearson's own Secure Mocks Set is the confirmed example. Its FAQ states: "There are no specific grade boundaries for any Secure Mocks Set Maths (Mock set 7, 8 or 9) as these do not go through an awarding process. We do have indicative grade boundaries for GCSE Maths that centres can use." A genuine past paper, by contrast, carries a board-published notional boundary derived from real national results. A Secure Mocks Set boundary is an estimate borrowed from elsewhere, not derived from this paper at all.
Yes. Some departments write their own mock papers entirely in-house, with their own questions and their own mark scheme, and no exam board involvement at all. That is a legitimate and common approach, since teachers know their own cohort's gaps better than any generic paper can, but it means the grade rests on the school's own judgement alone, without even the indicative, board-supplied fallback that applies to a paper like Pearson's Secure Mocks Set. A parent cannot tell which case applies from the grade alone; the only way to know is to ask.
Ask a specific question rather than a general one about the mark scheme. Asking directly whether the paper was a genuine past exam, an exam board's own mocks product such as Pearson's Mocks Service, or something the department wrote itself is harder to answer vaguely than an open question about marking. One parent on a public forum thread asked her child's school exactly this and was told simply: "I did ask what's the difference. I got no reply" — which is itself a sign the question is worth asking more precisely, and in writing.
Not confirmed. This research did not find an equivalent board-written, board-marked mocks product at AQA, OCR or WJEC/Eduqas, nothing matching Pearson's Secure Mocks Set structure. That is an absence of evidence rather than proof it does not exist, since it was not possible to check every administration page at all three boards. What is confirmed for all four boards is the separate security rule around genuine past-paper mocks, covered in full on our companion page about bringing a mock paper home. The no-boundary finding itself is verified only for Pearson.
Our specialist GCSE tutors read the actual working behind a mock result, on any board and any paper type, and turn what it shows into a plan for the real exam.
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