Every published 2024/25 DfE value-added score for A-level Mathematics across Slough's schools, with the interval and cohort size behind each one.
Book a Free ConsultationSlough is a single-tier local authority for Department for Education purposes, LA code 871, so its 2024/25 school-level sweep for A-level Mathematics covers every school inside the borough boundary and nothing beyond it. Twelve Slough providers entered A-level Mathematics candidates that year, eleven schools and one further education college; eleven have a published subject value-added score, and one, Baylis Court School, is suppressed for cohort size. Leading Tuition provides one-to-one A-level maths tuition to students at every one of them.
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Book a Free Consultation Message us on WhatsAppFive Slough sixth forms matched roughly a hundred students each to the Department for Education's 2024/25 A-level Mathematics value-added calculation, and none of the five is dramatically larger than the rest.
| Sixth form | Matched A-level Mathematics entries, 2024/25 |
|---|---|
| Herschel Grammar School | 101 |
| Langley Grammar School | 126 |
| St Bernard's Catholic Grammar School | 97 |
| Upton Court Grammar School | 122 |
| Windsor Forest Colleges Group | 102 |
Sorted alphabetically, not by cohort size, so the order says nothing about which department is larger. Source: DfE institution-level subject value-added data set, 2024/2025, filtered to A-level Mathematics.
The five figures span a range of 29 entries -- from 97 up to 126 -- rather than the wide gap between one dominant department and a long tail of small ones that a town this size might produce. Across all eleven Slough schools with a published 2024/25 value-added score, the sorted list of matched entries runs 15, 21, 26, 29, 40, 48, 97, 101, 102, 122, 126: a median of 48, the middle value of the eleven. A parent choosing where to take A-level Mathematics in Slough is choosing between several comparably sized departments rather than one obvious large option and a scattering of small alternatives.
None of this says anything about outcomes. Entry counts describe how many students a department teaches, not how well it prepares them -- the value-added figures below are a separate measure entirely, and they do not follow the same order.
Of the eleven Slough schools with a published 2024/25 A-level Mathematics value-added score, only one is positive. A twelfth, Baylis Court School, entered 5 A-level Mathematics candidates in 2024/25, and its value-added row is suppressed -- every field in the underlying data set for that row is coded "c", because the Department for Education does not publish this measure below a minimum matched-cohort size, and 5 sits well under every other Slough school's entry count.
The table below lists all eleven published Slough rows, sorted by matched cohort size, largest first -- not by value-added score, so that reading down it never reads as a ranking of results.
| Provider | Matched entries | Value added | 95% interval | Verdict |
|---|---|---|---|---|
| Langley Grammar School | 126 | 0.37 | 0.16 to 0.58 | above zero |
| Upton Court Grammar School | 122 | -0.15 | -0.37 to 0.07 | not significant |
| Windsor Forest Colleges Group | 102 | -0.37 | -0.61 to -0.13 | below zero |
| Herschel Grammar School | 101 | 0 | -0.24 to 0.24 | not significant |
| St Bernard's Catholic Grammar School | 97 | -0.04 | -0.29 to 0.2 | not significant |
| Slough and Eton Church of England Business and Enterprise College | 48 | -0.92 | -1.27 to -0.57 | below zero |
| The Langley Academy | 40 | -0.13 | -0.51 to 0.25 | not significant |
| The Westgate School | 29 | -0.77 | -1.22 to -0.32 | below zero |
| Ditton Park Academy | 26 | -0.03 | -0.5 to 0.44 | not significant |
| St Joseph's Catholic High School | 21 | -0.43 | -0.96 to 0.09 | not significant |
| Wexham School | 15 | -0.28 | -0.9 to 0.34 | not significant |
Source: Department for Education institution-level subject value-added data set, 2024/2025, filtered to GCE A level, the A-level cohort, and Mathematics (subject 5R0jd) -- not Mathematics (Further), which is scored separately.
Langley Grammar School recorded a 2024/25 A-level Mathematics value-added score of 0.37, with a 95% confidence interval running from 0.16 to 0.58, from 126 matched entries. That interval sits entirely above zero, which is what makes it a finding at all rather than noise from a single year's cohort. This is the Department for Education's progress measure for 2024/25 entrants specifically, and it is not a measure of teaching quality.
Three other Slough rows also clear zero, and all three sit below it. Windsor Forest Colleges Group's 2024/25 value added was -0.37, interval -0.61 to -0.13, from 102 matched entries -- again the Department for Education's progress measure for 2024/25 entrants, not a measure of teaching quality. Slough and Eton Church of England Business and Enterprise College's was -0.92, interval -1.27 to -0.57, from 48 matched entries, the same progress measure and the same caveat. The Westgate School's was -0.77, interval -1.22 to -0.32, from 29 matched entries, on the same basis.
The remaining seven published Slough rows are not significant: each one's confidence interval spans zero, so the Department for Education's own rule treats it as no evidence of a difference in either direction. Upton Court Grammar School, Herschel Grammar School, St Bernard's Catholic Grammar School, The Langley Academy, Ditton Park Academy, St Joseph's Catholic High School and Wexham School all fall in this group; the table above carries each one's own score, interval and matched entry count.
Nothing in this data explains why one row's interval clears zero and another's does not. The published figures carry no information about specification, teaching sets or which optional content a department has chosen, so this page does not connect any of the four significant scores to how each department teaches its course.
Whichever Slough sixth form your child is at, our A-level maths tutors build a programme around their exam board, their sixth form's teaching order and the papers ahead of them -- not around a borough average.
Book a Free Consultation Message us on WhatsAppThe Department for Education also publishes a separate subjects-entered count for each provider, taken from exam entries rather than the value-added calculation's matched cohort. Langley Grammar School made 126 A-level Mathematics entries in 2024/25 and a further 40 in Mathematics (Further) at A-level, plus 51 more Mathematics (Further) entries at AS level -- a fourth-subject route some students take without carrying Further Maths through to a full A-level in Year 13.
Core Maths -- recorded by the Department for Education under the title Mathematical Studies -- sits alongside the A-level rather than replacing it, for students who want to keep some quantitative work going without a full second A-level. Two Slough schools entered candidates for it in 2024/25: Herschel Grammar School with 2 entries and St Joseph's Catholic High School with 5. Neither of Slough's other two grammar schools recorded any Core Maths entries in the same year.
Baylis Court School's 5 A-level Mathematics exam entries in 2024/25 are part of why its value-added row is suppressed: the Department for Education does not publish this measure below a minimum matched-cohort size, and its entry count sits well under every other Slough school's, the next smallest being Wexham School's 15.
The figures above come from a single data set: the Department for Education's institution-level subject value-added data set, filtered to GCE A level, the A-level cohort, and Mathematics specifically -- not Mathematics (Further), which is scored separately and produces different numbers for the same schools. Value added compares a student's actual result against a prediction built from their own prior attainment at GCSE, so it measures progress relative to that starting point, not teaching quality or how a school actually teaches the subject.
The "matched entries" figure in the table above is not the same as the exam-entry count in the section before it, and the two do not always agree. Langley Grammar School's 126 matched entries equal its 126 A-level Mathematics exam entries exactly, and Slough and Eton Church of England Business and Enterprise College's 48 matched entries equal its 48 exam entries too. Other schools show a gap: Windsor Forest Colleges Group entered 109 A-level Mathematics candidates but only 102 were matched to prior-attainment records, a gap of 7. St Bernard's Catholic Grammar School entered 102 candidates against 97 matched, a gap of 5. Value added is calculated only on the matched group, so a school's cohort size in the value-added table can undercount how many students it actually entered.
This subject-specific measure is also different from the all-subject 16-to-18 progress score this site uses for other cities' A-level maths pages -- a single figure covering everything a sixth form's students sat, not Mathematics on its own. The two are not interchangeable: a school's subject-level Mathematics score and its all-subject progress score are calculated on different populations of students and can point in different directions.
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Our A-level maths tutors cover every Slough sixth form. Book a free consultation and we will teach to your child's own exam board and the papers their school has actually entered them for.
Book a Free Consultation Message us on WhatsAppChecked against the Department for Education's Get Information About Schools register on the day this page was published, all twelve Slough providers with a 2024/25 A-level Mathematics entry are open. That matters because DfE's exam and value-added data can lag a closure by a full academic year or more, and a page that copies last year's provider list without checking current status can point a family towards a school that no longer exists.
Windsor Forest Colleges Group is worth a specific note. GIAS records its establishment type as Further education, not a school with a sixth form -- it is a further education college, distinct from the eleven school sixth forms in the tables above, though the value-added measure covers it on the same basis as the rest.
Two of Google's top results for "a-level maths tutors in slough" rank pages that do not exist. As of the day this page was published, both Tutorful's and Tutor Hunt's Slough-and-maths landing pages return HTTP 404 -- a directory and a marketplace, ranking on dead links, in a search where every other result is generic tuition-centre marketing rather than anything about a named Slough school.
The Department for Education sets A-level Mathematics content centrally, so AQA, Pearson Edexcel, OCR and OCR's MEI-endorsed specification all teach the same pure, statistics and mechanics topics; the boards differ in how they structure and split the papers, not in what is examined. None of the performance data used on this page records which board a Slough sixth form has entered its students for -- that sits in each school's own curriculum information, not in the national tables. Our A-level maths page covers the paper-by-paper differences board by board, including AQA, Edexcel and OCR. The first thing worth checking for any Slough student is which specification their own sixth form actually uses, because it changes the past papers and formula sheet they should be practising with, not the underlying content.
Leading Tuition works with A-level Mathematics students across every one of Slough's sixth forms, from the four Consortium grammar schools through to the borough's non-selective schools and Windsor Forest Colleges Group. Because Slough has no single dominant department, a programme built around one "typical" Slough student would fit almost nobody; instead, tutors work from a student's own exam board, their sixth form's teaching order and their current working grade -- whether that is a Year 12 student starting the jump from GCSE algebra into Pure content, or a Year 13 student a few weeks from their final papers.
A first session is diagnostic rather than prescriptive. Before setting a programme we want to see where a student's marks are actually being lost -- a pacing problem on the final questions of a paper reads differently from a knowledge gap scattered through it, and the two need different terms of work. Parents get a written note after each session covering what was worked on and what to practise before the next one, which matters over a two-year course more than it does over a single term.
Ready to start A-level maths tuition in Slough? Book a free consultation and tell us your child's sixth form, exam board and current working grade, and a specialist A-level maths tutor will build their programme around it.
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Langley Grammar School, at 0.37, is the only one of Slough's eleven published 2024/25 A-level Mathematics value-added scores whose 95% confidence interval sits entirely above zero -- the interval runs from 0.16 to 0.58, from 126 matched entries. This is the Department for Education's progress measure for 2024/25 entrants specifically, not a measure of teaching quality, and three other Slough rows also clear zero in the opposite direction: Windsor Forest Colleges Group, Slough and Eton Church of England Business and Enterprise College, and The Westgate School are all negative. The remaining seven published rows are not statistically significant.
Because its cohort is too small. Baylis Court School entered 5 candidates for A-level Mathematics in 2024/25, and the Department for Education suppresses a subject value-added score below a minimum matched-cohort size -- every field for Baylis Court's row in the underlying data set is coded "c", for suppressed, rather than a number. Every other Slough school in this data set entered at least 15 A-level Mathematics candidates in the same year, which is part of why their scores are published while Baylis Court's is not.
No. Five Slough sixth forms -- Herschel Grammar School, Langley Grammar School, St Bernard's Catholic Grammar School, Upton Court Grammar School and Windsor Forest Colleges Group -- each matched between 97 and 126 students to the Department for Education's 2024/25 value-added calculation, a range of 29 entries. A parent choosing where to take the subject in Slough is choosing between several comparably sized departments rather than one clear largest option; the smallest published Slough cohort, Wexham School's, was 15.
A further education college, not a school with a sixth form. The Department for Education's Get Information About Schools register records its establishment type as Further education, distinct from the eleven school sixth forms that also appear in this page's A-level Mathematics figures. Its 2024/25 value-added score, -0.37 (interval -0.61 to -0.13, from 102 matched entries), is calculated on the same basis as every school's, but it sits inside a different kind of institution -- worth knowing if a family is comparing it directly against Slough's four grammar schools.
They are scored as separate subjects with separate rows, identified in the Department for Education's data set by different subject codes, and a school's value added in one says nothing about the other. Langley Grammar School made 126 A-level Mathematics exam entries in 2024/25 and a further 40 in Mathematics (Further) at A-level, plus 51 more Mathematics (Further) entries at AS level -- three different qualifications in this page's underlying data, not one course reported three ways.
Two Slough schools entered candidates for Core Maths -- recorded by the Department for Education under the title Mathematical Studies -- in 2024/25: Herschel Grammar School with 2 entries and St Joseph's Catholic High School with 5. Neither of Slough's other two grammar schools, Langley Grammar School or Upton Court Grammar School, recorded any Core Maths entries in the same year. It is a separate Level 3 qualification for students who want to continue some mathematics without committing to a full second A-level.
Not the content. The Department for Education sets A-level Mathematics subject content centrally, so AQA, Pearson Edexcel, OCR and OCR's MEI-endorsed specification all teach the same pure, statistics and mechanics topics; the boards differ in how many papers there are and how marks are split between them. Slough's own performance data does not record which board each sixth form has entered its students for, so the first thing worth checking for any Slough student is their own school's choice, which changes which past papers and formula sheet apply, not the underlying content.
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