DfE value-added data for the ten Wimbledon-constituency sixth forms that entered students for A-level Mathematics in 2024/25 -- not the wider Merton sweep.
Book a Free ConsultationTen schools within the Wimbledon parliamentary constituency entered students for A-level Mathematics in 2024/25, according to Department for Education value-added data covering the London Borough of Merton. King's College School entered the largest matched cohort of the ten, 147 students; Raynes Park High School entered the smallest, 10. Whether a single score is a genuine finding or statistical noise depends on how wide its confidence interval is -- the subject of this page.
Our expert A-level Maths tutors help students across Wimbledon build a programme around their own sixth form's specification and current working grade, whichever of the ten schools below they attend.
Book a Free Consultation Message us on WhatsAppWimbledon is not a local authority. It is a town inside the London Borough of Merton (LA code 315), and Department for Education results are published by local authority, not by town. A direct sweep of Merton's 2024/25 A-level Mathematics results returns twelve schools -- but two of them are nowhere near Wimbledon.
Harris Academy Merton sits on Wide Way in Mitcham, Surrey, CR4 1BP -- in the Pollards Hill ward and the Mitcham and Morden parliamentary constituency, according to the Department for Education's own Get Information about Schools register. St Mark's Church of England Academy sits on Acacia Road, also in Mitcham, CR4 1SF, in the Figge's Marsh ward, the same constituency. Neither carries a Wimbledon postcode, and neither sits inside the Wimbledon parliamentary constituency that the other ten schools on this page share.
This page covers the ten schools whose GIAS record places them inside the Wimbledon parliamentary constituency -- postcodes SW19 and SW20 -- rather than the whole of Merton. That geographic line, not the schools' results, decides who appears here: Harris Academy Merton's 2024/25 A-level Mathematics value-added score is -0.52, with a 95% confidence interval of -0.95 to -0.1 from 32 matched entries -- the only score among all twelve Merton rows whose interval sits entirely below zero -- and it is excluded from this page on postcode alone, not because of that figure. This is DfE's progress measure for 2024/25 entrants, not a measure of teaching quality. St Mark's Church of England Academy, the other excluded school, recorded 0.34 across a 95% interval of -0.46 to 1.14 from 9 matched entries, also DfE's progress measure for 2024/25 entrants rather than a measure of teaching quality, and too small a cohort for the interval to clear zero in either direction.
The consequence is worth stating plainly: within the ten Wimbledon-constituency schools below, nothing scores below the range a small cohort's own statistical noise would produce. That is not because Wimbledon's schools outperform Mitcham's -- it is because the one clearly below-average Merton row in this data happens to sit outside the constituency boundary this page uses. A family comparing Wimbledon against Mitcham and Morden as a whole, rather than against Wimbledon alone, should read both excluded figures above alongside the ten below, not just the ten.
Three of the ten rows in this page's data are not three separate cohorts. Rutlish School and Ricards Lodge High School run a single joint sixth form together, called RR6, based at the Ricards Lodge site on Lake Road. Both schools' own websites describe it identically: "RR6 is the combined Sixth Form of Ricards Lodge High School and Rutlish School." Rutlish teaches boys aged 11 to 16 and Ricards Lodge teaches girls aged 11 to 16; from age 16, their students join the same co-educational sixth form.
The Department for Education's 2024/25 data reflects that structure exactly, though nothing in the raw sweep explains it. RR6, reported under its own URN, recorded 106 matched entries for A-level Mathematics. Rutlish School's own figure for the same year recorded 78 matched entries, and Ricards Lodge High School's own figure recorded 28. 78 plus 28 equals 106. RR6's total is not a third, additional cohort; it is the same 106 students, appearing once under the joint sixth form's own registration and once under the partner school each is registered at.
Their value-added scores differ too, because DfE calculates each one from a differently defined group of students even though the underlying cohort overlaps completely: RR6's combined score is 0.02, with a 95% confidence interval of -0.21 to 0.25 from its 106 matched entries; Rutlish's own figure is 0.13, interval -0.14 to 0.4, from 78; and Ricards Lodge's own figure is -0.28, interval -0.74 to 0.17, from 28. Every one of those three intervals spans zero, so none is a finding on its own -- and every figure in this paragraph is DfE's progress measure for 2024/25 entrants, not a measure of teaching quality.
This matters for anything that adds these figures up. A reader totalling the matched entries in the table below to estimate how many Wimbledon students take A-level Mathematics each year should count Rutlish's and Ricards Lodge's contribution once, through RR6's own 106, not three times over as 212. The pattern is one the DfE dataset does not flag anywhere in its own output -- it only becomes visible by checking whether a school's registered pupils and a joint sixth form's entries could plausibly be the same people, and then confirming it against both schools' own admissions pages, as we did.
Two students at RR6, Rutlish School or Ricards Lodge High School can be sitting side by side in the same classroom while this data reports them three different ways. Our expert A-level Maths tutors help students across Wimbledon work from their own sixth form's actual papers, whichever of the ten schools -- or which row in this data -- describes them.
Book a Free Consultation Message us on WhatsAppValue added compares a cohort's actual A-level grades against the grades achieved nationally by students with the same GCSE results. A score is only a finding, in DfE's own terms, where the 95% confidence interval sits entirely on one side of zero -- otherwise a true score of zero cannot be ruled out from that cohort alone. Among the ten Wimbledon-constituency schools, exactly one clears that bar.
| School | Matched entries | Value added | 95% confidence interval |
|---|---|---|---|
| King's College School | 147 | 0.07 | -0.12 to 0.27 |
| RR6 (Rutlish & Ricards Lodge joint sixth form) | 106 | 0.02 | -0.21 to 0.25 |
| Rutlish School (own figure, within RR6) | 78 | 0.13 | -0.14 to 0.4 |
| Wimbledon College | 60 | 0.15 | -0.16 to 0.46 |
| Wimbledon High School GDST | 47 | 0.53 | 0.18 to 0.88 |
| Ricards Lodge High School (own figure, within RR6) | 28 | -0.28 | -0.74 to 0.17 |
| Harris Academy Wimbledon | 27 | -0.15 | -0.61 to 0.31 |
| Ursuline High School Wimbledon | 20 | 0.18 | -0.36 to 0.72 |
| Raynes Park High School | 10 | -0.52 | -1.28 to 0.25 |
| Hall School Wimbledon | suppressed | c | c |
Sorted by matched entries (cohort size), not by score. Rutlish School's and Ricards Lodge High School's own rows are the same students already counted once through RR6 -- see below. "c" means DfE has suppressed the figure. Source: Department for Education subject value-added dataset, 2024/25, A-level cohort, Mathematics.
Wimbledon High School GDST recorded +0.53 for 2024/25 A-level Mathematics, with a 95% confidence interval of 0.18 to 0.88 from 47 matched entries -- the only one of the ten Wimbledon-constituency schools whose interval clears zero. This is DfE's progress measure for 2024/25 entrants, not a measure of teaching quality. Every other interval in the table above spans zero.
King's College School's own score, 0.07 across an interval of -0.12 to 0.27 from its 147 matched entries -- the largest cohort of any Wimbledon-constituency school -- also spans zero. This is DfE's progress measure for 2024/25 entrants, not a measure of teaching quality. A large cohort narrows a confidence interval but does not guarantee it clears zero; King's College School's is the largest cohort on this page and still does not.
Wimbledon College's score is 0.15, across an interval of -0.16 to 0.46 from 60 matched entries -- DfE's progress measure for 2024/25 entrants, not a measure of teaching quality; its own interval spans zero. Ursuline High School Wimbledon's score is 0.18, across -0.36 to 0.72 from 20 matched entries -- again DfE's progress measure for 2024/25 entrants, not a measure of teaching quality, and again an interval that spans zero. Harris Academy Wimbledon's score is -0.15, across -0.61 to 0.31 from 27 matched entries -- the same progress measure, not a measure of teaching quality, with an interval that spans zero on the other side of the line.
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Two of the ten schools in this comparison are recorded differently in the Department for Education's live school register than in the 2024/25 results data cited above, because both are converting to academy status.
Ursuline High School Wimbledon's 2024/25 results were published under URN 102683, the school's identity as a Roman Catholic voluntary aided school. That establishment record closed on 31 January 2025 when the school converted to academy status; it reopened the next day, 1 February 2025, as an academy under a new URN, 151350, joining Sancta Familia Catholic Academy Trust. The school itself -- same Crescent Road site, same girls-only intake, same age range, 11 to 18 -- continues without interruption; only its DfE identifier changed. GIAS confirmed URN 151350's status as Open when we checked it directly against the register the day we researched this page.
Wimbledon College is partway through the same process. Its current establishment record, URN 102681, is marked "Open, but proposed to close" on GIAS, with a closure date of 30 November 2026 and the reason recorded as "Academy Converter." The Department for Education's own Regions Group confirmed the decision in its published list of decisions made in June 2026: an application for Wimbledon College and four Catholic primary schools in Merton to convert and join Sancta Familia Catholic Academy Trust -- the same trust Ursuline joined -- was approved, with no representations recorded against it. Its 2024/25 A-level results, in the table above, still belong to URN 102681; the school has not yet reopened under a new identifier as this page publishes, and a reader checking its status after 30 November 2026 should expect a new URN, the same way Ursuline's changed.
Whichever of the ten Wimbledon-constituency sixth forms your child attends -- or is choosing between -- our expert A-level Maths tutors build every session around their own school's exam board, past papers and target grade, never a generic revision list.
Book a Free Consultation Message us on WhatsAppValue added measures a cohort's grades against national expectations for students with matched GCSE results; it says nothing about any individual student, and a wide confidence interval means DfE's own estimate could be wrong by a wide margin either way.
Raynes Park High School illustrates this cleanly. Its 2024/25 A-level Mathematics value-added score is -0.52, with a 95% confidence interval running from -1.28 to 0.25 -- a span of 1.53 -- from just 10 matched entries. This is DfE's progress measure for 2024/25 entrants, not a measure of teaching quality, and with an interval this wide, spanning both a strongly negative and a clearly positive true value, the central figure alone tells a reader very little. A cohort of 10 needs many more matched students before its value-added score becomes a stable enough measure to lean on.
Hall School Wimbledon's figures are suppressed entirely -- published as "c" rather than a number, in every one of DfE's four indicators for this school. DfE suppresses a figure where a cohort is small enough that an individual student's result could become identifiable from the published score. That is a different statement from saying the school has no A-level Mathematics cohort at all.
With nine of the ten schools' intervals spanning zero, most Wimbledon families cannot use this year's value-added data alone to choose between local sixth forms -- the numbers genuinely do not separate them with any statistical confidence. What does differ, and what a family can act on directly, is which specification a student's own school has entered them for. A-level Mathematics in England is set by three awarding bodies -- Edexcel, AQA and OCR -- covering the same core Pure and Applied content but differing in past papers, grade boundaries and question style; our A-level Maths subject guide compares the three in full rather than repeating that comparison here, and our Maths tuition page covers our approach across every level, not only A-level.
The ten schools also span a wide range of cohort sizes, from King's College School's 147 matched entries down to Raynes Park High School's 10, which is itself worth knowing before treating any single year's results as settled. A student without strong local provision at their own school, or moving mid-course between two of the ten, draws on the same national specification and the same board's past papers wherever they are taught, which is what actually determines what a tutor needs to work from. Families further down the pipeline, weighing which of Wimbledon's schools to target in the first place, may also want our 11+ tuition in Wimbledon page, which sets out the borough's own admissions landscape in full.
A value-added score describes a whole cohort against national expectations; it says nothing about one student's own trajectory. Our expert A-level Maths tutors help students across Wimbledon close their own specific gaps -- a weak topic, a paper technique, a resit -- whatever their current sixth form's headline figures say.
Book a Free Consultation Message us on WhatsAppNo. Wimbledon is a town inside the London Borough of Merton, local authority code 315, and Department for Education results are published by local authority rather than by town. A direct sweep of Merton's 2024/25 A-level Mathematics results returns twelve schools, but two of them -- Harris Academy Merton and St Mark's Church of England Academy -- sit several miles away in Mitcham, inside the Mitcham and Morden parliamentary constituency rather than Wimbledon's. This page covers the ten schools whose GIAS record places them inside the Wimbledon constituency, and states that rule rather than assuming it.
RR6 is the combined sixth form Rutlish School and Ricards Lodge High School run together from the Ricards Lodge site. Rutlish teaches boys aged 11 to 16 and Ricards Lodge teaches girls aged 11 to 16; at 16, their students join RR6's shared, co-educational sixth form. The Department for Education's 2024/25 data reflects this: RR6 recorded 106 matched entries for A-level Mathematics, while Rutlish's own figure recorded 78 and Ricards Lodge's recorded 28. 78 plus 28 equals 106 -- the same students, reported three ways, not three separate cohorts.
No, though its Department for Education identifier has changed. The establishment record behind its 2024/25 A-level results, URN 102683, closed on 31 January 2025 when the school converted to academy status. It reopened the next day, 1 February 2025, under a new URN, 151350, as part of Sancta Familia Catholic Academy Trust. The school itself continues on the same Crescent Road site, still girls-only, still ages 11 to 18 -- only its DfE identifier changed, which is why searching its old URN alone might wrongly suggest it had shut.
Not in the sense of ceasing to operate. Wimbledon College's current establishment record is marked “Open, but proposed to close” on the Department for Education's Get Information about Schools register, with a closure date of 30 November 2026, because the school is converting to academy status and joining Sancta Familia Catholic Academy Trust -- the same trust Ursuline High School Wimbledon joined in February 2025. DfE's own Regions Group approved the conversion in its June 2026 decisions. The school and its site continue; only the establishment's URN is due to change.
Wimbledon High School GDST recorded the highest 2024/25 A-level Mathematics value-added score of the ten Wimbledon-constituency schools, +0.53, with a 95% confidence interval of 0.18 to 0.88 from 47 matched entries -- the only one of the ten whose interval clears zero. This is the Department for Education's own progress measure for 2024/25 entrants, comparing actual grades against the grades achieved nationally by students with matched GCSE results. It is explicitly not a measure of teaching quality, and DfE does not present it as one.
No. Both sit in Mitcham, inside the London Borough of Merton but several miles from Wimbledon itself. Harris Academy Merton is on Wide Way, CR4 1BP, in the Pollards Hill ward; St Mark's Church of England Academy is on Acacia Road, CR4 1SF, in Figge's Marsh ward. Both fall within the Mitcham and Morden parliamentary constituency, not Wimbledon's, according to their own Get Information about Schools records. They appear in a Merton-wide sweep of A-level Mathematics results but not in this page's ten-school Wimbledon-constituency coverage.
The ten Wimbledon-constituency schools' matched entries for 2024/25 range from King's College School's 147 down to Raynes Park High School's 10, but they cannot simply be added together: RR6's 106 matched entries are the same students already counted separately under Rutlish School's 78 and Ricards Lodge High School's 28. One school's figures, Hall School Wimbledon's, are suppressed entirely by DfE and not published. Counting those 106 once rather than twice, the published school rows come to 417 matched entries, with Hall School Wimbledon's suppressed and so outside that total.
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