Practical guidance from the Leading Tuition team
Book a Free ConsultationThe London Borough of Sutton is home to some of the highest-performing selective state schools in England. If you are trying to identify the best grammar schools in Sutton Borough, the short answer is that Sutton has four single-sex grammar schools — Nonsuch High School for Girls, Wallington High School for Girls, Wilson's School, and Wallington County Grammar School — plus one mixed selective school, Greenshaw High School, which operates a partially selective admissions process. Each school consistently achieves outstanding results, but they differ in character, admissions criteria, and the type of learner who thrives there.
Sutton's selective schools are all state-funded and free to attend. They select pupils primarily at age 11 (Year 7 entry) through the Sutton Selective Eligibility Test, which is administered jointly by the consortium of Sutton grammar schools each autumn. Here is a quick overview of each school:
All four fully selective Sutton grammar schools use the same entrance test, administered by GL Assessment, typically in September of Year 6. The test covers verbal reasoning, non-verbal reasoning, and mathematics. Children do not need to sit separate tests for each school — one registration covers all four grammars in the consortium.
To be considered for a selective place, a child must first be deemed selective eligible — meaning they score above the standardised threshold set each year. Being eligible does not guarantee a place; schools then rank eligible applicants using their own oversubscription criteria, which typically prioritise looked-after children, siblings, and then distance from the school.
It is important to understand that the test is age-standardised, which means a child born in August is not automatically disadvantaged compared to a September-born peer. However, preparation still matters enormously. Most children who gain places have practised GL Assessment-style questions consistently in the months leading up to the test.
Registration for the Sutton test usually opens in the spring of Year 5 or early Year 6 — parents should check the consortium website each year for exact dates, as these can shift slightly.
Wilson's School and Nonsuch High School for Girls are regularly cited in national league tables as two of the best-performing state schools in England. At A-level, both schools achieve average grades well above the national state school average, with a high proportion of pupils progressing to Russell Group universities, including Oxford and Cambridge.
At GCSE, all four fully selective schools report Progress 8 scores significantly above zero — meaning pupils make considerably more progress than the national average for pupils with similar starting points. Attainment 8 scores at these schools typically sit between 70 and 80, compared to a national average of around 46.
Wallington County Grammar School and Wallington High School for Girls are not far behind. Both have strong sixth forms offering A-levels across sciences, humanities, and languages, and both have track records of pupils gaining places at competitive universities. For families considering medicine or law, all four schools have experience supporting pupils through UCAT preparation and personal statement writing.
League table position is not the only factor worth considering. Each school has a distinct culture, and the right fit matters as much as raw results. Here are some practical points to weigh up:
The Sutton selective test is competitive. In most years, the number of eligible children significantly exceeds the number of available Year 7 places across the four schools combined. Preparation typically begins in Year 5, focusing on GL Assessment verbal reasoning, non-verbal reasoning, and numerical reasoning question types.
Many families work with a tutor from around January of Year 5 through to the September test date in Year 6 — roughly 18 months of structured preparation. This does not mean drilling endlessly; the most effective preparation builds genuine reasoning skills alongside familiarity with the test format. Timed practice under realistic conditions is particularly valuable in the final two to three months before the test.
It is also worth noting that some children are naturally well-suited to this style of assessment, while others find it harder regardless of preparation. An honest assessment of your child's strengths early on helps avoid unnecessary pressure and allows time to explore strong non-selective alternatives if needed.
Leading Tuition works with families preparing for the Sutton 11 Plus, offering structured programmes that build reasoning skills progressively rather than relying on last-minute cramming.
Do all Sutton grammar schools use the same entrance test?
Yes. The four fully selective grammar schools in Sutton — Nonsuch, Wallington High School for Girls, Wilson's, and Wallington County Grammar School — are part of a consortium that uses a single GL Assessment test sat in September of Year 6. You register once and can apply to any or all of the four schools through the normal secondary school application process.
What score do you need to pass the Sutton 11 Plus?
There is no fixed pass mark published in advance. The selective eligibility threshold is set each year after the test, based on that cohort's performance. Historically, children need to perform strongly across all three papers — verbal reasoning, non-verbal reasoning, and mathematics — to be deemed eligible. Being eligible does not guarantee a place; oversubscription criteria then apply.
Can children from outside the London Borough of Sutton apply?
Yes. The Sutton grammar schools are open to children living anywhere, not just within the borough. However, because distance is used as a tiebreaker once a child is selective eligible, families living further away face a practical disadvantage for oversubscribed schools. Many successful applicants do live in Sutton or immediately neighbouring boroughs such as Merton, Croydon, or Kingston.
When should we start preparing for the Sutton selective test?
Most families begin structured preparation in Year 5, typically from January onwards, giving around 18 months before the September Year 6 test. Starting earlier than Year 5 is rarely necessary and can lead to burnout. The priority is building genuine reasoning ability and then developing familiarity with the GL Assessment format through timed practice in the months immediately before the test.
Choosing a grammar school in Sutton is a significant decision, and the good news is that all four fully selective schools offer an excellent education. The differences between them are real but subtle — visiting each school at open evening, talking to current pupils, and being honest about your child's strengths and preferences will tell you far more than any league table. Whatever the outcome of the 11 Plus, Sutton also has strong non-selective secondary options worth exploring alongside the selective route.
Leading Tuition supports families across South London and Surrey with 11 Plus preparation, offering tailored tuition programmes for the Sutton selective test.
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