Altrincham Grammar School for Boys (AGSB) is one of the most academically prestigious state selective schools in the North of England. Located on Marlborough Road in Bowdon, Altrincham, it educates boys aged 11 to 18 and has consistently ranked among the top-performing state schools in the country for both GCSE and A-Level results. Founded in 1912, AGSB has over a century of academic tradition behind it — and today, with an Ofsted Outstanding rating, a Daily Telegraph ranking in the top 10 sixth forms nationally, and 99% of pupils achieving grade 5 or above at GCSE, it represents one of the most sought-after selective places in Greater Manchester. For 2027 entry (the cohort currently in Year 5), AGSB offers 202 Year 7 places through the Trafford Grammar School Consortium entrance examination. This guide covers everything families need to know about the AGSB admissions process, the Trafford test format, the priority admission area, oversubscription criteria, qualifying scores, and how to prepare effectively.
| Detail | Information |
|---|---|
| School type | Boys’ selective grammar academy (11–18) |
| Address | Marlborough Road, Bowdon, Altrincham, Cheshire WA14 2RS |
| Founded | 1912 |
| Year 7 places (2027 entry) | 202 |
| Entrance test | Trafford Consortium GL Assessment (VR, NVR, Maths) |
| Registration opens | 12 noon, Thursday 23 April 2026 |
| Registration closes | 12 noon, Friday 19 June 2026 |
| Exam date | Monday 14 September 2026 |
| Results issued | Mid-October 2026 (by email) |
| CAF deadline | 31 October 2026 |
| National offers day | 1 March 2027 |
| Priority admission area | WA13, WA14, WA15, M33, M23 (within Trafford LA) |
| Ofsted rating | Outstanding |
| GCSE results | 99% achieve grade 5+ in English & Maths |
| Sixth form ranking | Top 10 in England (Daily Telegraph 2025) |
AGSB is part of the Trafford Grammar School Consortium and uses the Consortium’s shared GL Assessment entrance test. This means families register through the Consortium registration system (typically via traffordgl.applicaa.com), sit the test once on 14 September 2026, and can share the result with any combination of the five Consortium schools when completing the Common Application Form (CAF) in October. AGSB is responsible for its own admissions as an academy and applies its own oversubscription criteria to the standardised scores it receives from GL Assessment.
Registration opens at 12 noon on 23 April 2026. To register, parents or carers must complete the online application form during the registration window (23 April – 19 June 2026). Late registrations are not accepted for the September test; any late applicant cannot be considered for Year 7 entry in September 2027 via the main round and would only be considered after National Offers Day on 1 March 2027 if places remain available.
AGSB holds an Open Evening for Year 5 parents and children, which for 2027 entry was held on Tuesday 5 May 2026 between 5pm and 7.30pm. This event is an opportunity to hear from the Head Master and current students, see the school, and ask questions about the admissions process and life at AGSB. Future Open Evening dates for subsequent entry years are announced on the school’s website at agsb.co.uk.
AGSB’s oversubscription criteria are more detailed than those of some other Trafford grammar schools, reflecting the school’s commitment to widening access for Pupil Premium-eligible boys while maintaining rigorous selection. The key elements of the criteria are:
1. Looked-after children and previously looked-after children who meet the qualifying standard are given the highest priority, regardless of area.
2. Up to 20 Pupil Premium places are ring-fenced for boys who are eligible for Pupil Premium funding, live within the priority admission area (WA13/WA14/WA15/M33/M23 within Trafford LA), attend a Trafford state primary school, and achieve a standardised score of 324–333 on the Trafford Consortium test.
3. Boys in the priority area scoring 334 or above: All boys living within the priority admission area who achieve a standardised score of 334 or above are eligible for a place; if there are more such applicants than available places after the higher-priority categories have been filled, final allocation is by score and then by distance.
4. Boys outside the priority area scoring 334 or above are considered after all priority-area applicants, with allocation by score and then by distance.
The priority admission area — postcodes WA13, WA14, WA15, M33, and M23 within the Trafford local authority boundary — covers much of Altrincham, Bowdon, Hale, Timperley, Sale, and parts of Wythenshawe. Families outside this area who wish to apply to AGSB should be aware that they are competing for whatever places remain after priority-area boys have been allocated, and that in a typical year this out-of-area pool is limited. That said, AGSB’s 202-place intake is large relative to many selective schools, which means out-of-area offers are still made each year to boys who score consistently well.
AGSB uses the Trafford Consortium entrance test, administered by GL Assessment. This is a bespoke multiple-choice paper in three areas: verbal reasoning (VR), non-verbal reasoning (NVR), and mathematics. The test consists of two papers, each approximately one hour in length, both sat on the same day. Scores are age-standardised after marking.
Verbal reasoning questions in the Trafford GL test assess language ability through tasks such as word analogies, synonym and antonym identification, word codes, letter sequences, hidden word identification, and verbal comprehension. Non-verbal reasoning questions assess spatial and pattern-recognition skills through matrix completions, shape sequences, analogies, codes, and spatial reasoning. The mathematics component covers the KS2 curriculum up to the start of Year 6, including number, fractions and decimals, percentages, ratio, algebra, geometry, measurement, and data handling — all in multiple-choice format.
One feature of the Trafford test that families should understand: because the paper is bespoke to the Consortium, there are no official past papers available. GL Assessment provides familiarisation materials (accessible through the AGSB website) showing examples of each question type, which are an important starting resource. Commercial practice books in GL Assessment format — such as those published by Bond 11+, CGP, and Schofield and Sims — provide the most useful additional practice material.
Ready to start AGSB 11+ preparation?
Leading Tuition’s specialist tutors cover GL Assessment VR, NVR and Maths for Trafford grammar schools. Rated 4.8/5 by families across Greater Manchester. Spaces are limited — enquire early.
Message Us on WhatsAppOur specialist tutors help children prepare for the Trafford selective admissions test with personalised, one-to-one tuition. Rated 4.8/5 on Trustpilot.
Book a Free ConsultationAGSB’s academic outcomes speak clearly: 99% of pupils achieving grade 5 or above in both English and Maths at GCSE, a Daily Telegraph top-10 sixth form ranking, and consistent placement among the top state schools in England for A-Level performance. But what distinguishes AGSB as a school beyond exam results?
AGSB is a boys-only school with a single-sex environment from Year 7 through Year 13. Research consistently shows that boys in single-sex selective environments often perform better academically and report higher levels of engagement with learning, partly because classroom dynamics differ meaningfully from mixed environments. AGSB’s culture reflects this: it is a school with high expectations of academic effort and genuine intellectual engagement, combined with extensive co-curricular provision in sport, music, drama, and community outreach.
The school’s Horizons Outreach programme connects AGSB boys with pupils from less advantaged backgrounds across the local area, reflecting a commitment to social responsibility alongside academic achievement. The sixth form — rated among the best in England — prepares students for highly competitive university destinations, including Oxbridge, Russell Group institutions, and competitive programmes such as Medicine, Law, and Engineering. AGSB students who go on to the sixth form benefit from an exceptional record of Oxbridge and Russell Group offers.
The school is located in Bowdon, one of Altrincham’s most affluent and well-connected areas, with good transport links to central Manchester and the wider Cheshire area. The school is well-served by public transport, including Altrincham tram and rail stations approximately 1.5 miles from the school, and many families in the catchment area travel from Sale, Stretford, Hale, Timperley, and surrounding areas.
Effective preparation for AGSB via the Trafford GL Assessment test requires a systematic approach to all three assessed areas — VR, NVR, and maths — combined with deliberate practice of the multiple-choice format. The goal is not just to develop the underlying skills but to be able to deploy them quickly and accurately under significant time pressure.
Timeline. Most families targeting AGSB begin structured preparation in September or October of Year 5, giving approximately twelve months before the September exam. This timeline allows a gradual build from foundational skills (Year 5 autumn/spring) through systematic question-type coverage (Year 5 spring into Year 6 autumn) to timed full-paper practice in the final months before the exam. Beginning earlier than Year 5 is possible for children with specific weaknesses, but sustained practice is most productive when it feels achievable — starting in Year 4 with a heavy schedule risks fatigue long before the exam date.
Verbal reasoning. VR performance correlates strongly with vocabulary breadth and the ability to spot linguistic patterns quickly. Regular wide reading — daily, across different genres including fiction, non-fiction, and newspapers — builds vocabulary more efficiently than vocabulary lists alone. Targeted VR practice from Year 5, covering all question types systematically, develops the speed and pattern recognition that the test requires. Boys who are strong natural readers often find VR their highest-scoring area with relatively modest additional preparation; boys with narrower reading habits may need more concentrated VR work.
Non-verbal reasoning. NVR is typically the most unfamiliar area for children beginning preparation, as it tests visual and spatial skills not directly covered in primary school. Most children improve rapidly with regular practice: the key is to introduce each question type systematically, ensure the child understands the rule governing each type, and then practise speed. Full mastery of the most common NVR question types — matrices, sequences, analogies, codes, and spatial reasoning — is achievable for most well-prepared children within four to six months of regular practice.
Mathematics. The Trafford maths component covers the full KS2 curriculum in multiple-choice format. Any gaps in the KS2 curriculum should be identified and addressed early in the preparation period. Children should also practise the specific skills required by multiple-choice maths: using answer options to check and guide solutions, working backwards from offered answers, and using estimation to eliminate obviously incorrect options. These techniques can meaningfully improve accuracy under time pressure even when underlying maths knowledge is strong.
For families deciding between AGSB and the other Trafford Consortium schools, the most meaningful distinctions are: single-sex versus co-educational environment; geography and travel time; and school ethos. AGSB and AGSG are the Consortium’s two single-sex schools; Sale Grammar, Stretford Grammar, and Urmston Grammar are co-educational. For families whose sons are in the WA13/WA14/WA15 postal area, AGSB will typically be the closest selective boys’ grammar school by distance. Boys who live closer to Sale or Stretford may find those schools more accessible by travel time.
In terms of academic outcomes, all five Consortium schools are selective and produce strong results; however, AGSB’s 99% grade-5-plus rate at GCSE and its national sixth-form ranking make it particularly attractive to families prioritising the strongest possible academic environment at A-Level. The school’s position within Trafford’s grammar school landscape — as the founding boys’ grammar, established over a century ago — also gives it a distinct identity and tradition that resonates with many families.
Leading Tuition works with boys targeting AGSB and the wider Trafford Consortium through specialist one-to-one tutoring in GL Assessment format. Our tutors have deep experience with the VR, NVR, and maths content assessed by the Trafford test, and we tailor every engagement to the individual boy’s starting point, learning style, and preparation timeline.
We begin with a comprehensive diagnostic assessment covering all three areas in GL Assessment format, producing a clear picture of where a boy is performing well and where the most meaningful gaps are. A personalised preparation plan is then built around those findings, with regular sessions focused on the areas most likely to move his score. As the September exam approaches, we shift to timed full-paper practice, building exam stamina and multiple-choice technique alongside careful analysis of marked papers. Parents receive clear, regular progress updates throughout the preparation period.
Our students have achieved a 95%+ offer rate across selective school entry, and we are rated 4.8/5 on Trustpilot by families across the UK including families in Greater Manchester. Places for September 2026 Trafford preparation are limited and fill early, so we encourage families to enquire as soon as possible.
AGSB offers 202 Year 7 places for 2027 entry. The school is consistently oversubscribed, meaning that meeting the qualifying standard is necessary but not sufficient for a place. Oversubscription criteria then determine allocation, with looked-after children, Pupil Premium boys from Trafford state primaries, and priority-area boys scoring 334 or above given sequential priority. Out-of-area boys are considered after in-area applicants have been allocated.
AGSB’s priority admission area covers postal districts WA13, WA14, WA15, M33, and M23 within the Trafford local authority boundary. This encompasses Altrincham, Bowdon, Hale, Timperley, Sale, and parts of Wythenshawe. Boys within this area who achieve the qualifying score are prioritised over out-of-area applicants. Boys outside the priority area can still receive an offer, but typically need to score higher than the in-area threshold.
AGSB does not publish an absolute qualifying score in advance. The general threshold for in-priority-area applicants is understood to be around 334 on the standardised GL Assessment score. Pupil Premium boys from Trafford state primaries in the priority area may be eligible for one of up to 20 ring-fenced places if they score 324–333. Out-of-area boys typically need to score above 334 to be competitive. All scores are age-standardised.
Yes. AGSB holds Ofsted’s highest rating of Outstanding. At GCSE, 99% of pupils achieve grade 5 or above in both English and Maths. At A-Level, the school is consistently placed among the top 10 sixth forms in England and has sent students to Oxford, Cambridge, and leading Russell Group universities in medicine, law, engineering, and other competitive fields. The school’s academic culture is a central part of its appeal to families applying for Year 7 entry.
AGSB registration for 2027 entry opens at 12 noon on Thursday 23 April 2026 and closes at 12 noon on Friday 19 June 2026. Applications are made online through the Trafford GL Applicaa portal. The entrance examination takes place on Monday 14 September 2026. Results are issued by email in mid-October 2026. The CAF must be submitted to the relevant local authority by 31 October 2026. National Offers Day is 1 March 2027.
Leading Tuition provides specialist one-to-one GL Assessment preparation for boys targeting AGSB. We begin with a diagnostic assessment in VR, NVR and maths format, identify the specific areas most in need of development, and build a personalised preparation plan. We move to timed full-paper practice as September approaches. We are rated 4.8/5 on Trustpilot. Contact us via WhatsApp to book a free consultation.
Book a free consultation — specialist GL Assessment tuition for boys targeting AGSB and the Trafford Consortium.
Leading Tuition is rated 4.8/5 on Trustpilot by families across the UK.
Book a Free Consultation on WhatsApp