A-Level Maths Tutors in Guildford 2026

Guildford is a town within Surrey, local authority 936, not a local authority in its own right, so the Department for Education's A-level Mathematics results for "Surrey" cover 66 providers spread across the whole county. Nine of those sit inside Guildford Borough's own boundary, verified against each school's GIAS postcode rather than the county-wide list, and eight of the nine have a published 2024/25 value-added score.

Which Guildford Sixth Forms Does This Page Actually Cover?

Guildford is not its own local authority. It is a district of Surrey, and the Department for Education's institution-level A-level results for "Surrey" (local authority code 936) return 66 provider rows for 2024/25 A-level Mathematics — a list that stretches from Reigate in the east to Godalming and Haslemere in the south-west, most of it nowhere near Guildford. A search for "A-level Maths tutors in Guildford" needs the Guildford subset, not the county.

The obvious shortcut — keep every row whose postcode starts "GU" — gets the answer wrong in both directions. Of the 66 Surrey rows, 22 carry a GU postcode, but only 7 of those 22 sit inside Guildford Borough's actual administrative boundary. The other 15 — Godalming College, Charterhouse, All Hallows Catholic School, St Catherine's School, Cranleigh School, King Edward's School Witley, The Royal School, Unsted Park School (all GU7–GU10, in Waverley); Woking College, St John the Baptist Catholic Comprehensive School, Hoe Valley School (GU22, in Woking); and Gordon's School, Collingwood College (GU15/GU24, in Surrey Heath) — carry a Guildford-shaped postcode but sit in a different district entirely.

The trap also runs the other way. Two schools that are genuinely inside Guildford Borough do not carry a GU postcode at all. Howard of Effingham School's own record with the Department for Education's Get Information about Schools service lists its address as "Lower Road, Effingham, Leatherhead, Surrey, KT24 5JR" — Leatherhead is a Mole Valley town — yet GIAS's own District field for this school reads "Guildford", and an independent postcode lookup confirms KT24 5JR sits in Effingham parish and ward, both part of Guildford Borough. St Teresa's School shows the identical pattern: its GIAS address reads "Effingham Hill, Dorking, Surrey, RH5 6ST" — Dorking is a Mole Valley town too — while its GIAS District field, like Howard of Effingham's, reads "Guildford". A third school, Prior's Field, has a Godalming postal address (GU7 2RH, normally a Waverley postcode) but sits in Compton parish, inside Guildford Borough, and Guildford Borough Council's own planning register lists the school under that same GU7 address on its Guildford-domain site.

This page's coverage set was built by taking every URN in the 66-row Surrey table, fetching its postcode from GIAS, and checking GIAS's own District field — then cross-checking that field against an independent resolution of the same postcode to its ONS-defined local authority district. Both methods agree exactly, for all 66 rows. Nine providers reconcile to Guildford Borough this way: Royal Grammar School Guildford, George Abbot School, Guildford County School, Howard of Effingham School, Guildford High School, St Peter's Catholic School, Tormead School, St Teresa's School and Prior's Field School. Eight have a published A-level Mathematics value-added score for 2024/25; Prior's Field's is suppressed, for reasons the section below explains. Every one of the nine was confirmed open in GIAS on the day this page was researched and published.

What Does DfE's 2024/25 Value-Added Data Show for Guildford's Nine A-Level Maths Departments?

The table below carries every published 2024/25 A-level Mathematics value-added score for the nine Guildford Borough providers, sorted by matched-entry count — the size of the cohort DfE could actually score — never by the value-added figure itself. Each score is the Department for Education's own progress measure for that year's entrants: it compares each matched student's actual grade against the grade achieved nationally by students with the same prior (Key Stage 4) attainment. It is not a measure of teaching quality, and DfE flags a score "ABOVE" or "BELOW" the England average only where its 95% confidence interval falls entirely on one side of zero.

Sorted by matched-entry count, largest first, not by score. Every figure is DfE's 2024/25 value-added progress measure and is not a measure of teaching quality; each school's own confidence interval and matched-entry count are the numbers that decide whether a score is a finding at all.

Six of the eight published scores clear zero — their 95% confidence interval sits entirely on the positive side — and all six do so on the positive side: no Guildford Borough provider's interval falls below zero on this measure. That is worth stating plainly, and it rests on eight published figures, which is a small set. DfE's value-added measure already adjusts for each matched student's prior attainment, which is precisely what should make a reader pause before reading any cause into this rather than simply noting it.

Cohort size on its own settles nothing about whether an interval clears zero. Guildford High School's matched cohort, 55 students, is larger than five of the other eight Guildford schools on this table, yet its interval, -0.45 to 0.2, still spans zero: a respectable cohort size does not guarantee a clearing interval. St Teresa's School shows the opposite mechanism. Its point estimate, +0.69, is the highest of the nine, but it rests on only 6 matched students, and its interval, -0.29 to 1.67, is 1.96 wide and spans zero just as Guildford High School's does — for the reverse reason, too few matched students for the interval to narrow. Neither figure is a finding on its own; both illustrate why DfE reports the interval and the matched count alongside every score rather than the score alone.

How Many Students Take A-Level Maths and Further Maths at Each School?

DfE's Compare School Performance service records exam entry counts separately from the value-added dataset above, and cross-checking the two is a useful sanity check on both: a school's matched-entry count in the value-added table can only ever be equal to or lower than its raw entry count, because value added excludes any student without a linkable Key Stage 4 record.

Sorted by A-level Maths entry count, largest first. Source: each school's own Compare School Performance "subjects entered" page, 2024/25.

Royal Grammar School Guildford's 118 Mathematics entries are the largest raw cohort of the nine, and 1.76 times Guildford County School's 67 — both numbers drawn straight from the table above, since a ratio on its own tells a reader nothing without the two figures behind it. Further Mathematics uptake does not simply track cohort size: Guildford County School's 25 of 67 Mathematics students also sat Further Maths, a 37.3% share, the highest of the nine, while George Abbot School's 86-strong Mathematics cohort — the second-largest of the nine — produced only 17 Further Maths entries, a 19.8% share. Prior's Field's 4 Mathematics entries and zero Further Maths entries are the smallest cohort on this page, and the reason its value-added score does not appear in the table above.

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Why Doesn't Prior's Field School Have a Published Value-Added Score?

Prior's Field School's row in the value-added table above reads "suppressed" rather than carrying a number, and its own Compare School Performance page explains exactly why: the school made only 4 GCE A-level Mathematics exam entries in 2024/25, with no Further Mathematics entries at all. The Department for Education does not publish a value-added score, confidence interval or matched-entry count for a cohort this small — both the live API and the published table return the letter "c", DfE's own marker for a suppressed cell, for every one of the four value-added fields at once.

This is not unique to Prior's Field. Across the full 66-row Surrey table this page's coverage set was drawn from, 6 of the 66 rows carry the same "c" marker, all for the same underlying reason: too few matched students for DfE to publish a score without risking identifying an individual pupil's result. A parent reading a "suppressed" row should take it as a statement about cohort size, not as evidence that a school's A-level Mathematics teaching is unremarkable — the two are different claims, and only the first is what the data actually shows.

What Does DfE's Value-Added Score Actually Measure — and What Doesn't It?

Value added is a progress measure, not an attainment measure. For each matched student, DfE compares the A-level grade they actually achieved against the average grade achieved nationally by every other student who arrived with the same Key Stage 4 (GCSE) results. A school's value-added score for a subject is the average of that gap across every student it entered for that subject in that year. A positive score means matched students, on average, achieved a higher grade than students nationally with the same starting point; it says nothing about whether those students started from a stronger or weaker GCSE base than a neighbouring school's cohort — that comparison is exactly what the adjustment is designed to remove.

Three limits matter for reading any figure on this page. First, value added is scored within a single subject and is never comparable across subjects — a school's Mathematics score cannot be set against its English or Physics score to say which department is "better". Second, DfE itself only bands a score "ABOVE" or "BELOW" the England average where the 95% confidence interval sits entirely on one side of zero; where the interval crosses zero, as with Guildford High School's -0.45 to 0.2 or St Teresa's -0.29 to 1.67, the honest reading is that the true score cannot be distinguished from average with the available cohort. Third, this dataset publishes no county-wide or England-wide aggregate value-added figure — confirmed by querying the live API directly — because value added is inherently a school-level measure, not one that sums meaningfully across an authority.

What Should a Guildford Family Do With This Data?

A-level Mathematics in England is set by three awarding bodies — Edexcel, AQA and OCR — each publishing its own past papers, grade boundaries and specification, though all three cover the same core Pure and Applied content set out in the Department for Education's subject content requirements. This page has not verified which board each of the nine Guildford schools individually enters; our A-level Maths subject page and its board-specific pages for AQA, Edexcel and OCR cover what differs between them; a student's own school confirms which one applies to their papers.

None of the figures on this page changes what actually moves an individual student's Mathematics grade: their current working level against their target grade, on the specification their own sixth form has entered them for. A school's value-added score describes the average outcome of a whole cohort in a single year; it does not describe any one student's own trajectory, and a below-average or suppressed score is not a reason to assume a strong tutor cannot help a specific student close a specific gap. Families whose children also need 11+ preparation for one of the three Guildford schools that admit at that stage can read our separate 11+ tuition in Guildford page, which covers registration deadlines and test formats this page does not.

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