Which grammar schools can Slough children realistically apply to, and which exam format does each use?
Slough children can apply to schools in both Berkshire and Buckinghamshire. Burnham Grammar School (Berkshire, GL Assessment) is the closest grammar school and the most accessible for SL1–SL2 postcodes. Windsor Boys' School (Berkshire, GL Assessment) offers partially selective places and is popular with Slough families. In Buckinghamshire, Beaconsfield High School (girls only, CEM) and Royal Grammar School High Wycombe (boys, CEM) are the main targets. Because GL Assessment and CEM are fundamentally different exams, children applying to schools in both counties need dual-format preparation — this is what distinguishes the Slough preparation challenge from most other areas in England.
When does 11 plus registration open for Buckinghamshire schools, and can I miss the deadline?
Buckinghamshire 11 plus registration opens in early June of Year 5 and typically closes by late June or very early July. The window is short — usually three to four weeks — and Beaconsfield High School and RGS High Wycombe both require registration through the Buckinghamshire 11 Plus portal. Missing this window means your child cannot sit the Buckinghamshire test in the standard sitting. Late registration with a valid reason is occasionally possible, but results arrive after the main cohort, placing applicants at a disadvantage. Set a calendar reminder for the first week of June in your child's Year 5 — do not rely on school reminders, as Slough primary schools vary in how actively they communicate this deadline.
What is the pass rate for the 11 plus in Buckinghamshire, and what score does my child need?
Buckinghamshire does not publish a fixed pass mark. The threshold changes each year depending on the overall cohort's performance. Approximately the top 25% of all sitters in Buckinghamshire achieve a 'qualified' result, but achieving qualification does not guarantee a place at a preferred school. At RGS High Wycombe, demand is national and children typically need to score in the top 5–8% of sitters to be competitive for a place. At Beaconsfield High School, distance from the school plays a major tie-breaking role — Slough applicants from SL1 postcodes are further from the school than Beaconsfield and Gerrards Cross residents and may need a stronger score to compete effectively.
How is Burnham Grammar School's 11 plus different from the Buckinghamshire test?
Burnham Grammar School uses GL Assessment rather than CEM, so the test structure is predictable and preparation materials are widely available. The Burnham test typically includes separate Verbal Reasoning, Non-Verbal Reasoning, Mathematics and English papers, sat in a single morning. GL Assessment papers are standardised by age, so September-born children do not have an automatic scoring advantage over August-born children. Burnham Grammar draws its catchment heavily from Slough, Taplow and Burnham — children in SL1, SL2 and SL6 postcodes are historically within the qualifying distance for distance tie-breakers. Registration for Burnham Grammar is handled separately from Buckinghamshire schools, through the school's own admissions process. Check the school website each spring for updated timings.
My daughter wants to apply to Beaconsfield High School. What do we need to know about the CEM test?
Beaconsfield High School uses the CEM (Centre for Education and Monitoring) test administered by Buckinghamshire County Council. CEM tests are deliberately harder to predict than GL Assessment papers — the format varies year to year, and Buckinghamshire does not publish official practice materials. The test is taken in a single sitting of approximately 45 minutes and blends comprehension, verbal ability and numerical reasoning without clear section breaks. Beaconsfield High uses distance as a tie-breaker for equally scoring candidates, which can disadvantage Slough applicants who live further from the school than families in Beaconsfield village or Gerrards Cross. CEM preparation should focus on building genuine fluency — wide reading, mental arithmetic speed and reasoning flexibility — rather than practising fixed question types.
Should my child take tuition for the Slough 11 plus, and when should we start?
Surveys consistently show that more than 60% of grammar school applicants in the SL postcode area receive paid tutoring before the exam. While tutoring is not required, children without any structured preparation are at a disadvantage in a field where most competitors have been preparing for 12–24 months. The most effective approach for Slough families is to start structured preparation in Year 4 — introducing VR question types, building reading habits above year group level and beginning mental arithmetic speed work. Year 5 is when most families begin formal tuition or use adaptive platforms like Applaa. Leaving preparation until Year 6 is high risk for both GL and CEM formats. Quality of preparation matters more than quantity of hours — targeted practice on identified weak areas outperforms generic paper drilling.
What happens after my child sits the 11 plus — how do school places work in Slough?
The process has two stages. First, your child receives results: Buckinghamshire results (qualifying / not qualifying) arrive in October of Year 6. GL Assessment results for Burnham Grammar and Windsor Boys' arrive on similar timelines but via separate letters. Second, all secondary school applications are made through the Slough Borough Council online admissions portal (for Berkshire schools) or via Buckinghamshire County Council (for Bucks schools) by 31 October of Year 6. You list school preferences in order. Grammar school places are only offered to qualifying children, and final offers are made on National Offer Day (1 March of Year 7 entry year). If your child qualifies but does not receive their preferred grammar school, there is an appeals process that has historically succeeded for borderline cases where distance was the deciding factor.
Is Windsor Boys' School worth applying to for selective places, and how competitive is it?
Windsor Boys' School is a state secondary school that operates a partially selective admissions system, taking approximately 90 pupils per year on academic ability using GL Assessment. With over 300 applicants typically competing for those selective places, roughly the top 30% of sitters gain entry. The school uses GL Assessment and also includes a written English component, so candidates need both strong VR/NVR scores and solid English composition skills. Windsor Boys' is popular with Slough families as it is accessible from SL1–SL4 postcodes and offers a well-regarded academic sixth form. Because it uses GL Assessment rather than CEM, preparation for Burnham Grammar simultaneously prepares children for Windsor Boys', making it a natural dual application for Slough boys.
