Altrincham Grammar School for Boys, often shortened to AGSB, is a selective boys' grammar school on Marlborough Road in Bowdon, Altrincham. It educates boys from 11 to 18, has about 1,421 pupils on roll and is part of The Hamblin Education Trust. The school's own welcome is direct about its identity: high expectations, strong public examination results and an education that is meant to stretch able boys well beyond the minimum grammar-school offer.
The academic character is traditional but not narrow. AGSB describes itself as providing an outstanding academic education, while the Head Master's welcome puts sport, creative arts, engineering, scientific innovation and debating alongside examination success. The formal curriculum and sixth form sit within that broader culture of ambition, with personal development and leadership treated as part of the everyday work of the school rather than an add-on.
School life has a busy selective-school feel. The official site points families towards academic life, library provision, exam results, sixth form and pastoral care, and its language repeatedly connects achievement with contribution beyond school. AGSB comes across as a large boys' grammar with a competitive academic culture and a visible expectation that pupils take part in sport, creative work, debating or leadership.
Admission to Year 7 is through the Trafford Grammar School Consortium process. The published admission number is 202, and the 2027 route uses two GL Assessment multiple-choice papers covering verbal, non-verbal and mathematics skills. The policy sets score thresholds of 334 or above for the main ranked groups, with 324 or above applying to limited looked-after and pupil-premium routes, before candidates are ordered within priority categories by standardised score and distance. The latest applications record lists 490 applications and 218 offers; published measures add Ofsted Outstanding, +1.32 Progress 8, 100% grade 5+ in English and maths and 54.7% AAB or better at A level.