Entry requirements, key dates and DfE outcomes data for external Year 12 applicants, verified at MGGS's own source.
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Maidstone Grammar School for Girls (MGGS) is a state selective grammar school on Buckland Road in Maidstone, Kent, whose sixth form is fully co-educational: the school's own 2026-27 admission arrangements state it will admit girls into Years 7 to 11 and girls and boys into Years 12 and 13. For September 2026 entry it sets a total Year 12 intake of 180, with 50 places reserved for external applicants who meet a grade 5 floor in English and Mathematics.
The confusion is understandable. The Department for Education's Get Information About Schools (GIAS) register lists MGGS's "Gender of entry" as Girls, and a search engine reading that field alone could conclude the whole school, sixth form included, is single-sex. It is not a contradiction to say otherwise -- it is a gap in what that particular field records. GIAS's gender-of-entry field describes the age-11 entry point only; it has no separate field for sixth-form admissions, so a school can correctly show "Girls" there while running a mixed sixth form underneath it.
MGGS's own admission arrangements settle the question directly. Both the September 2026 and September 2027 policies open with the same sentence: "Maidstone Grammar School for Girls is a selective Grammar school. The school will admit girls into Years 7 to 11 and girls and boys into Years 12 and 13." The identical wording across two separate policy years, ratified in different terms, is what makes this standing practice rather than a one-off exception written into a single document.
The school's own admissions page goes further than the formal policy text, describing the sixth form's composition in practice: "We welcome applications to our Sixth Form from both male and female students, whether currently attending our own or any other school. Each year we welcome many new entrants from other schools, including boys." One of those entrants, an external boy admitted through Kent Choices, put it plainly on the school's own KentChoices profile: he chose MGGS "as a boy coming into an all girls school" and said the sixth form team "made me feel especially welcome."
Maidstone has three state selective schools, and a family researching MGGS is very likely to encounter the other two by name alone: Maidstone Grammar School (MGS), a separate boys' school on Barton Road with its own governing body and admissions, and Invicta Grammar School, a second girls' grammar on Huntsman Lane. All three are frequently confused in search results because their names overlap so heavily, and all three, checked independently at each school's own website, turn out to go mixed at exactly the same point: Year 12.
MGS's own formal admission arrangements, published through Kent County Council, use the identical construction to MGGS's: "The school will admit boys into Years 7 to 11 and boys and girls into Years 12 and 13." A dedicated section of the same document, headed "Maidstone Grammar School Sixth Form Admission Arrangements," states "There is a mixed Sixth Form at MGS" and sets the number of additional Year 12 places for new external applicants at 50 -- the same figure MGGS uses for its own external quota. MGS's own homepage restates this for current families: "a selective school for boys, with girls admitted in the Sixth Form," alongside a current roll of around 1,450 students, including over 300 in the sixth form.
Invicta's own formal admission arrangements confirm the same pattern using different words: a section headed "Sixth Form Admission arrangements" states "Mixed in Sixth Form," setting a Published Admission Number of 60 for external applicants against a Year 12 capacity of 300. Read precisely, that formal document never itself uses the word "boys" -- it is Invicta's homepage marketing copy, not its admissions policy, that spells this out: the school describes itself as "a popular and outstanding 11-18 selective girls' school which welcomes boys into the Sixth Form," with over 1,600 students on roll and nearly 400 in the sixth form. Both distinctions matter to a parent: MGGS's and MGS's formal policies name the co-ed intake in the policy text itself, while Invicta's formal policy states "Mixed" without naming a sex, leaving the explicit "boys" claim to sit only in its marketing pages.
The practical result for a Maidstone family is wider than three single-sex names suggest. All three schools enrol external Year 12 candidates on the same GCSE results day, Thursday 20 August 2026, and MGGS and Invicta even share the same afternoon window for external enrolment, 12pm to 2pm. A girl who assumes MGGS is her only mixed option, or a boy who assumes neither girls' school will take him, is working from an incomplete picture of what Maidstone actually offers at 16. Families comparing MGGS against MGS specifically should also see our separate Maidstone Grammar School sixth form entry page, which covers MGS's own 5.7 average-GCSE threshold and subject list in full -- material this page does not repeat, since MGS is a different institution with its own admissions process.
MGGS's requirements for September 2026 entry apply equally to internal Year 11 students and to external applicants from any other school, though existing Year 11 students are given priority once they meet the criteria. The published floor is: at least a grade 5 in either GCSE English Language or English Literature; at least a grade 5 in GCSE Mathematics; and at least six GCSE subjects at grades 9 to 5. A student without at least a grade 6 in English Language or English Literature is, in the school's own words, "likely to find the choice of subjects which they can access is restricted," because individual A-level subjects carry their own additional entry requirement on top of the general floor, typically a minimum of grade 6 in the subject itself or a closely related one.
| Requirement | Threshold |
|---|---|
| English Language or Literature GCSE | Grade 5 minimum |
| Mathematics GCSE | Grade 5 minimum |
| Overall GCSE profile | At least 6 subjects at grades 9-5 |
| Four-subject route (rather than three) | 8 or more grades 9-7, including the above |
| Individual A-level subjects | Typically grade 6 minimum in the subject or a related one |
| Age cut-off | 16 by 31 August of the year of entry |
Students who want to carry four subjects into Year 12, rather than the standard three, face a higher bar: MGGS's policy requires "8 or more grades 9-7" across the GCSE set, in addition to clearing the general floor above. This is a meaningfully different threshold from the school's general entry requirement, and a student aiming for four A-levels needs to plan their Year 11 options with that specific target in mind rather than the headline grade-5 figures alone.
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Book a Free Consultation Message us on WhatsAppMGGS publishes its admission arrangements a full policy year ahead, which makes a direct comparison possible rather than theoretical. On the numbers that matter most to an external applicant, nothing moved: the Pupil Admission Number for the Sixth Form is 180 in both the September 2026 and the September 2027 policy, and the number of places reserved for external candidates is 50 in both -- a figure the school notes "may be exceeded" if internal transfers from Year 11 fall short of filling the year group. A family comparing the two documents side by side, as this page has, can say with confidence that the external quota is stable rather than shrinking or growing year on year.
One genuine change did appear for September 2027 entry: a new appeals-adjacent route the September 2026 policy does not contain. Under the heading "Internal Reviews: Sixth Form," the 2027-28 policy states that an offer holder, whether internal or external, who fails to achieve the required grades "may apply to the Governor Review Committee where mitigating factors may be presented," with the Committee then deciding whether a place should still be offered. This sits alongside, rather than instead of, the existing statutory right of appeal, and it did not exist in the prior year's document -- a genuine addition rather than a restatement of an existing safeguard.
Both policy years agree on the boundaries around the entry point itself: MGGS "would not normally accept a student into Year 12" after September of the relevant entry year, and the school does "not normally accept students into Year 13" at all. A family planning a late application, or a transfer partway through Year 12, should treat these as firm defaults rather than routine exceptions the school grants on request.
Applications for September 2026 entry opened on 28 November 2025 and the first-round deadline falls at midnight on 6 February 2026 for external candidates -- though MGGS's own Kent Choices provider profile sets an earlier internal deadline, midnight on 12 December 2025, for its own Year 11 students submitting sixth-form option choices. The school states it will contact applicants after 1 March 2026 to confirm conditional offers, which only become firm once actual GCSE results are known.
Two dates matter most for a successful applicant. Offer holders are expected to attend an Induction Day on Wednesday 8 July 2026, and enrolment itself takes place on GCSE results day, Thursday 20 August 2026, with internal applicants invited to enrol in the morning and external applicants between 12pm and 2pm in the afternoon. An applicant who submits after the 6 February deadline is not automatically rejected but is placed on a waiting list, which MGGS holds and re-ranks against its oversubscription criteria until January of the following year.
Because MGGS's external quota is capped at 50 places (subject to the exception noted above), a strong GCSE set does not automatically guarantee a place if more than 50 qualifying candidates apply. Priority goes first to eligible looked-after and previously looked-after children. After that, MGGS ranks remaining external applicants "on their total points score," based on GCSE predictions from the candidate's current school and any GCSEs already certified at the time of application. The school treats IGCSEs as directly equivalent to GCSEs for this ranking, and states it will act as "sole arbiter" if a candidate has sat a different qualification altogether. Where two applicants are tied even after ranking, the school uses a random draw to decide between them, rather than a further academic or geographic tiebreaker.
This ranking mechanism means the practical bar for a competitive entry year sits above the published minimum grades. A candidate who clears the grade 5 floor by the narrowest possible margin is not guaranteed one of the 50 places if enough other qualifying candidates rank ahead of them on point score -- the published thresholds describe eligibility, not a guarantee once eligible.
Ofsted's most recent inspection, conducted on 7 March 2023 and published 10 May 2023, graded MGGS Outstanding overall and graded "Sixth form provision" Outstanding as its own separate category, alongside quality of education, behaviour, personal development and leadership and management. That is a judgement on the sixth form specifically, not an inference carried over from the rest of the school's rating.
The Department for Education's 16-18 performance tables, covering the 184 students who completed A-level study at MGGS in 2025, add detail Ofsted's headline rating does not. The school's average A-level result was a grade B- (36.48 points), ahead of the Kent state-funded average of C+ (34.87) and roughly in line with the England-wide average of B- (36.1). Its value-added progress score was +0.05, banded AVERAGE, against an England average of -0.03 -- meaning MGGS's Year 13 leavers slightly outperformed what their earlier attainment predicted, though not by enough to clear the AVERAGE band into ABOVE AVERAGE. Retention to the end of the course stood at 99.5%, against 95.9% across Kent and 93.1% nationally, and 12.8% of the cohort achieved AAB or higher including at least two facilitating subjects, against 17.3% in Kent and 17.5% nationally. Among the school's 10 disadvantaged sixth-form leavers in 2025, the average grade was also a B- (35.52 points), with a progress score of -0.13 -- a small cohort where the DfE's own confidence interval, -0.54 to 0.28, is wide enough that a single student's results move the figure noticeably.
| 2025 A-level measure (DfE) | MGGS | Kent average | England average |
|---|---|---|---|
| Average grade (points) | B- (36.48) | C+ (34.87) | B- (36.1) |
| Progress score | +0.05 (AVERAGE) | -- | -0.03 |
| Retention to end of course | 99.5% | 95.9% | 93.1% |
| AAB+ incl. 2 facilitating subjects | 12.8% | 17.3% | 17.5% |
None of the top search results for MGGS's sixth form quote this DfE dataset directly, relying instead on the school's own self-reported headline percentages -- for 2025, MGGS itself reports 23% A*-A, 57% A*-B and 82% A*-C at A-level on its Kent Choices provider profile, a self-reported measure that is not directly comparable to the DfE's points-based average grade above, since the two describe outcomes in different units.
MGGS's own admissions page states plainly that "students must be 16 years of age by 31st August of year of entry into Year 12" -- a fixed age cut-off that applies to internal and external applicants alike, and sits alongside, not instead of, the GCSE thresholds set out above. On its Kent Choices provider profile, MGGS reports its own headline 2025 results as 23% A*-A, 57% A*-B and 82% A*-C at A-level, a self-reported measure in different units from the DfE's points-based average grade cited above, and one no other page ranking for this term quotes alongside the official dataset.
On Trustpilot we are rated 4.8 out of 5 from 58 reviews, read 22 August 2026. Leading Tuition works with families preparing for sixth-form entry at several selective Kent schools, and our GCSE tuition is built around the published grade thresholds a specific school sets, rather than a generic revision programme.
A family requesting Year 12 entry outside the normal age group must contact the Headteacher at the point of applying, and for early entry, must be able to show the child will have completed their GCSEs before starting Year 12. A request to apply a year later than expected requires the family to set out the child's full secondary education history and the specific reasons for the delay; MGGS does not ask for supporting evidence as a matter of course, but decisions are made case by case rather than automatically.
International students are admitted to MGGS's sixth form on the same standard two-year, full-time programme as any other Year 12 entrant, provided they can evidence the equivalent of a grade 5 at GCSE level in both Mathematics and English, meet the same subject-specific entrance criteria that apply to every applicant, and hold the right to remain in the UK for the length of the course. This route sits alongside, not instead of, the academic thresholds set out earlier on this page -- an international applicant is not assessed against a separate or reduced standard.
Where a Year 11 student's current GCSE trajectory falls short of MGGS's grade 5 floor, or of the specific subject requirements a chosen A-level course sets, Leading Tuition's GCSE tuition works from the published thresholds themselves rather than a generic revision programme, targeting the exact subjects and grade boundaries that decide whether an application clears the bar. For families weighing MGGS against the county's other selective sixth forms, our 16+ school guides cover entry routes at other Kent grammar schools on the same basis: what the school's own admission arrangements actually say, checked at source.
Yes. MGGS's own admissions page states it welcomes applications to the sixth form “from both male and female students, whether currently attending our own or any other school,” and that it welcomes “many new entrants from other schools, including boys” each year. A boy applies through Kent Choices in exactly the same way as an external girl, meeting the same GCSE thresholds, and is ranked against other external applicants for one of the 50 places set aside for candidates joining from outside the school.
The Department for Education's 2025 16-18 performance tables record 184 students completing A-level study at MGGS that year, with a further 6 on applied general qualifications. Get Information About Schools lists the whole school's roll at 1,254 against a capacity of 1,240, across Years 7 to 13, so the sixth form makes up roughly a seventh of the total school population once both year groups are counted.
No. Nothing in MGGS's published admission arrangements for September 2026 or September 2027 entry describes a written test or an interview for external Year 12 applicants. Places are decided academically: applicants must clear the grade 5 and 6-GCSE floor set out above, and if more external candidates qualify than there are places, they are ranked by total GCSE point score rather than assessed through any separate exam.
From September 2027 entry, MGGS's admission policy adds a route it did not previously publish: an offer holder, internal or external, who narrowly misses the required grades can apply to the school's Governor Review Committee, presenting mitigating factors for the Committee to weigh before deciding whether to offer the place anyway. The September 2026 policy contains no equivalent clause, so this is a genuinely new safety net rather than a restated one.
Yes, on a defined basis. The school's admission arrangements state that international students may be admitted to the sixth form for Year 12 entry on the standard two-year, full-time programme, provided they can evidence the equivalent of a grade 5 at GCSE in both English and Mathematics, meet the same subject entrance criteria as any other applicant, and hold the right to remain in the UK for the length of the course.
In the Department for Education's 2025 tables, MGGS's 184 A-level students averaged a grade B- (36.48 points), against a Kent state-funded average of C+ (34.87) and an England-wide average of B- (36.1). The school's progress score of +0.05 is banded AVERAGE against an England average of -0.03, and 99.5% of students were retained to the end of their course, against 95.9% across Kent and 93.1% nationally.
No. Maidstone Grammar School for Girls (MGGS, URN 118836, Buckland Road) and Maidstone Grammar School (MGS, URN not shared with MGGS, Barton Road) are two separate foundation schools with separate governing bodies, separate heads and separate admission arrangements, despite the near-identical name. MGS is the historically boys' school; its own sixth form, like MGGS's, has admitted both sexes since Year 12. Our separate page on MGS covers its own entry requirements in full.
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