AGSG 11+ Complete Guide 2026: Entry, Test Format and Preparation

Altrincham Grammar School for Girls (AGSG) is one of the most distinctive selective schools in England: with approximately 1,250 pupils, it is the largest single-sex grammar school in the country. Founded in 1910, located on Cavendish Road in Bowdon, Altrincham, and rated Outstanding by Ofsted at its most recent inspection in October 2022, AGSG offers 204 Year 7 places through the Trafford Grammar School Consortium entrance examination. Part of the Bright Futures Educational Trust, the school educates girls from age 11 through to the sixth form, with a strong track record of Oxbridge and Russell Group destinations, extensive co-curricular provision, and a welcoming, academically rigorous environment. For families in Greater Manchester and north Cheshire considering selective education for a daughter, AGSG is typically the first school on the list. This guide covers the school in depth: its history and distinctive character, the 2026 admissions timeline, the Trafford GL Assessment test format, the 8-mile catchment radius and oversubscription criteria, qualifying scores, and how to prepare effectively.

AGSG at a Glance

Detail	Information
School type	Girls’ selective grammar academy (11–18)
Address	Cavendish Road, Bowdon, Altrincham, Cheshire WA14 2NL
Founded	1910
Total pupils	~1,250 (largest single-sex grammar in England)
Year 7 places (2027 entry)	204
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
Catchment radius	8 miles from main entrance (Cavendish Road)
Ofsted rating	Outstanding (October 2022)
Trust	Bright Futures Educational Trust
Telephone	0161 686 3011

AGSG’s History and Distinctive Character

AGSG was founded on 4 July 1910, a product of the 1902 Education Act which set out to provide enhanced educational opportunities for girls across England. The original building was designed to accommodate 180 children, including 30 at nursery age. Over the next century, the school grew substantially — today’s campus on Cavendish Road is a blend of historic and modern buildings, including a distinctive floating first floor with a stainless steel staircase, and more recent additions such as the rebuilt Breeze Hill building housing Geography, History, and ICT facilities.

What sets AGSG apart most distinctively is its scale: with approximately 1,250 students aged 11 to 18, it is formally the largest single-sex grammar school in England. This size brings advantages rarely found in smaller selective schools — a breadth of subject and extracurricular options that rivals many independent schools, a large and active social community, extensive sports and arts provision, and a sixth form with a wide range of A-Level and enrichment options. At the same time, the school works deliberately to ensure that its size does not diminish the individual care and attention each student receives.

AGSG is part of the Bright Futures Educational Trust, a multi-academy trust based in Greater Manchester. The Trust’s involvement brings governance structures and collaborative support across a group of schools, while AGSG itself maintains its own strong institutional identity and culture. The school’s Twitter account (@AGGSchool) provides an active window into school life, reflecting the range of events, trips, competitions, and achievements that characterise the school year.

How Does the AGSG Registration and Admissions Process Work?

AGSG is a member of the Trafford Grammar School Consortium and uses the same GL Assessment entrance test as AGSB, Sale Grammar, Stretford Grammar, and Urmston Grammar. This means your daughter registers once, sits the test on 14 September 2026, and can list any combination of the five Consortium schools on the Common Application Form based on that single result.

Registration opens at 12 noon on Thursday 23 April 2026 and closes at 12 noon on Friday 19 June 2026. The online application is completed through the Trafford GL Applicaa portal. Families who miss the 19 June deadline cannot sit the September test and will not be considered for September 2027 entry in the main round. Any late applications are deferred until after National Offers Day on 1 March 2027, when places are only offered if vacancies remain.

AGSG conducts its own Year 6 transition process for girls who have already been allocated a place, including information sessions and induction activities to help Year 7 entrants settle into the school. Further information for incoming Year 7 pupils is available on the school’s website at aggs.bright-futures.co.uk.

AGSG Catchment Area and Oversubscription Criteria

AGSG’s primary catchment is defined by an 8-mile radius measured from the school’s main entrance on Cavendish Road, Bowdon. Girls who live within this radius and achieve the qualifying score are given priority over girls living outside it. Because the 8-mile radius from Bowdon extends into significant parts of Greater Manchester — covering Altrincham, Sale, Stretford, Trafford Park, Salford, parts of Manchester city centre, Stockport, Cheadle, and Knutsford — the catchment is wide by grammar school standards. Many girls who apply from addresses across south and central Manchester fall within the 8-mile radius.

AGSG’s oversubscription criteria give priority, after children with an Education, Health and Care Plan naming the school, in the following order: (1) looked-after children and previously looked-after children who achieve the qualifying score; (2) Pupil Premium-eligible girls living in the catchment area who attend a Trafford state primary and achieve the qualifying score; (3) sisters of girls currently at AGSG who live in the catchment area and achieve the qualifying score; (4) all other girls living in the catchment area who achieve the qualifying score, allocated by score and then by distance; and (5) girls from outside the catchment who achieve the qualifying score, allocated by score and then distance.

In practice, the school’s 204 places are primarily filled by girls from within the catchment area. Girls outside the 8-mile radius who score well above the qualifying threshold may still receive offers if places remain after in-catchment applicants have been allocated, but this is more likely in years with a particularly large Year 7 cohort or lower than average demand within the catchment.

Get Expert 11+ Preparation with Leading Tuition

Our 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 Consultation

The Trafford GL Assessment Test: What AGSG Candidates Face

AGSG uses the same bespoke Trafford Consortium GL Assessment entrance test as the other four Consortium schools. The test consists of two papers, each approximately one hour in length, covering verbal reasoning (VR), non-verbal reasoning (NVR), and mathematics. All answers are multiple-choice. Both papers are sat on Monday 14 September 2026.

Verbal reasoning questions assess language skills through word analogies, synonyms and antonyms, word codes, letter sequences, hidden words, and comprehension passages. Non-verbal reasoning questions assess visual and spatial thinking through pattern matrices, sequences, shape analogies, codes, and spatial reasoning. Mathematics covers the KS2 curriculum up to the start of Year 6 in multiple-choice format, including number, fractions, percentages, ratio, algebra, geometry, measurement, and data handling.

Because the paper is bespoke to the Trafford Consortium, official past papers are not available. GL Assessment provides familiarisation materials accessible through AGSG’s admissions pages, and commercial GL Assessment-style practice books (Bond 11+, CGP, Schofield and Sims) are the most widely used preparation resources. Scores are age-standardised after marking, so summer-born girls are not disadvantaged relative to September-born peers.

How AGSG Compares to AGSB

The most common comparison parents make is between AGSG and AGSB. Understanding the differences between these two schools is important, because both use the same entrance test and are located in Bowdon — making them natural companions on many families’ CAF rankings.

AGSG and AGSB are entirely separate schools. They have different headteachers, different governing bodies, different trust affiliations, different campuses, and different school cultures. AGSG is on Cavendish Road; AGSB is on Marlborough Road — the two schools are in the same area of Bowdon but are not adjacent. A girl applying to AGSG and a boy applying to AGSB sit the same Trafford Consortium test on the same day, but their applications are processed completely separately by each school’s admissions team.

The catchment definitions differ: AGSG uses an 8-mile radius from the Cavendish Road entrance; AGSB uses postal district boundaries (WA13/WA14/WA15/M33/M23 within Trafford LA). The 8-mile radius approach used by AGSG may include some areas that fall outside AGSB’s defined postal priority area, and vice versa. Families should check both schools’ admissions policies carefully if they have both a son and a daughter applying.

In terms of academic outcomes and reputation, both schools are Outstanding and produce excellent results. AGSG’s key differentiators are its scale (the largest girls’ grammar in England), its Bright Futures trust membership, its broad sixth form curriculum, and the particular culture of a large single-sex girls’ school with over 110 years of history. Both schools are strong destinations; the choice between them typically comes down to single-sex preference, geography, and the individual girl’s fit with each school’s culture.

Sixth Form at AGSG

AGSG has a well-regarded sixth form offering A-Level study across a wide range of subjects. Girls who join AGSG in Year 7 typically progress through to the sixth form; external applicants may also join at sixth form entry, subject to minimum GCSE requirements. The sixth form at AGSG is located within the school campus and benefits from dedicated common room and study facilities. The school’s Destinations of Leavers data, published annually on the website, shows a strong pattern of progression to leading universities including Oxford, Cambridge, and major Russell Group institutions in competitive subjects.

AGSG also offers enrichment through the Extended Project Qualification (EPQ), a range of clubs and societies, and extracurricular engagement. The school’s SCITT (School Centred Initial Teacher Training) partnership through Bright Futures reflects its engagement with teacher development and educational leadership beyond the school’s own pupil community.

How Should Your Daughter Prepare for the AGSG 11+ Test?

Preparation for AGSG is preparation for the Trafford Consortium GL Assessment test — the same test as for AGSB, Sale Grammar, Stretford Grammar, and Urmston Grammar. The three assessed areas are VR, NVR, and maths, all in multiple-choice format. Girls targeting AGSG therefore need to prepare systematically across all three areas, with a focus on speed and accuracy under timed conditions.

Starting point. Most families begin preparation in Year 5, giving around twelve months before the September exam. A September or October start in Year 5 allows time for systematic coverage of all question types, including the less familiar NVR, before intensive timed practice begins in the spring and summer terms of Year 6. Girls who begin later — in the spring of Year 6 — can still make meaningful progress if they have strong underlying skills, but the available time is compressed.

Verbal reasoning. A wide vocabulary is the most important foundation for VR. Daily reading across varied texts — fiction, non-fiction, newspapers, and age-appropriate non-fiction books — builds word knowledge more effectively than vocabulary lists alone. Targeted VR practice covering the full range of GL Assessment question types should begin in Year 5. Girls who are naturally strong readers often find VR the easiest area; those with a narrower reading repertoire may need more intensive VR work.

Non-verbal reasoning. NVR is unfamiliar to most children at the start of preparation. It tests visual and spatial skills not directly covered by primary school curriculum. With systematic practice, most girls develop strong performance in NVR within a few months: the key is to introduce each question type explicitly, ensure the rule governing each type is understood, and then practise until pattern recognition becomes automatic.

Mathematics. The maths component covers KS2 curriculum content in multiple-choice format. Any gaps in the curriculum should be identified early and addressed methodically. Multiple-choice maths requires specific technique: using answer options to guide solutions, eliminating implausible answers by estimation, and working backwards when direct calculation is difficult. These techniques should be practised explicitly alongside the underlying maths skills.

Frequently Asked Questions