Boys' and girls' grammar schools — entry process, exam format and preparation strategy.
Watford has two state grammar schools sitting adjacent to each other on the same road in Watford: Watford Grammar School for Boys (WGSB) and Watford Grammar School for Girls (WGSG). Both are highly regarded selective schools with long histories and strong academic reputations, drawing applications from across Hertfordshire, North London, and beyond. Despite sharing a location and a general academic character, the two schools are completely independent institutions with separate admissions processes, distinct cultures, and their own sixth forms.
Both schools are part of a consortium arrangement with other Hertfordshire grammar schools, meaning they share a common entrance examination — though the admissions process for each school is run separately and scores must meet each school's own threshold.
WGSB is one of Hertfordshire's highest-performing grammar schools for boys and consistently ranks well nationally for both GCSE and A-level results. The school admits around 150 boys into Year 7 each year from a pool of several hundred applications. It is part of the Hertfordshire consortium 11+ examination and uses the GL Assessment paper.
The school has a broad curriculum and strong sixth form, and boys who pass with a high score and express WGSB as a preference have a good chance of receiving an offer — though competition has intensified in recent years as the school's reputation has grown. The school attracts applications from across Hertfordshire, much of North London (particularly Barnet, Harrow, and Brent), and parts of South Hertfordshire including St Albans, Hemel Hempstead, and Rickmansworth.
WGSG is a highly regarded selective school for girls, consistently achieving strong GCSE and A-level results. It admits around 120 girls into Year 7 each year and is similarly part of the Hertfordshire consortium system. The school has a strong academic and co-curricular culture, with notable provision in music, drama, and sport, and a well-regarded sixth form that prepares girls effectively for university.
Like WGSB, WGSG uses the GL Assessment consortium paper for its 11+ examination. Girls who sit the test and express WGSG as a preference are ranked by standardised score, with oversubscription criteria applied when scores are tied at the borderline.
Both Watford Grammar Schools use the Hertfordshire Consortium 11+ examination, administered by GL Assessment. The test takes place in September of Year 6 and consists of the following papers:
Verbal Reasoning: A 50-question paper testing vocabulary, analogies, word patterns, logic, and code-breaking. Questions are multiple choice and the paper is strictly timed at 50 minutes. Verbal reasoning is a learnable skill and regular practice from Year 5 onwards is strongly recommended.
Non-Verbal Reasoning: A 50-question paper testing pattern recognition, spatial reasoning, and logical sequence completion using shapes and figures. Like verbal reasoning, this improves significantly with structured practice and exposure to the range of question types used.
Numerical Reasoning: A 50-question paper testing mathematical aptitude in a reasoning format — using number sequences, arithmetic operations, and applied mathematical thinking. This differs from a standard maths paper in that it emphasises speed and pattern recognition rather than extended calculation.
Registration for the Hertfordshire 11+ typically opens in June of Year 5 for the following year's test and closes in June of Year 6. Families must register directly through the Hertfordshire County Council portal. The test itself takes place in September, and results are usually released in October, ahead of the secondary school application deadline.
The Hertfordshire 11+ uses standardised scores (with a mean of 100 and standard deviation of 15). A child must score above the qualifying threshold — typically around 111 to 121 depending on the year and school — to be considered grammar-qualified. Being grammar-qualified does not guarantee a place; oversubscription criteria then determine which grammar school a child receives an offer from.
Both Watford Grammar Schools have designated areas — geographic priority zones that give locally resident children priority over equally or lower-scoring applicants from further afield. The designated areas are drawn by the schools and reviewed periodically; they broadly cover Watford and the surrounding towns, but the exact boundaries matter and families should check the current year's published admissions criteria carefully. Children who live outside the designated area but score highly enough can still receive an offer if places remain after locally qualifying children have been allocated.
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Both schools consistently achieve strong GCSE results, with the majority of pupils attaining grades 7-9 across most subjects. At A-level, both sixth forms have good records, with regular Russell Group and some Oxbridge admissions each year. The sixth forms at both schools attract internal candidates from Year 11 as well as external applicants from other local schools.
WGSB and WGSG are considered peer schools to grammar schools such as Dame Alice Owen's and St Clement Danes in Hertfordshire, and to schools such as QE Boys Barnet in North London. Many families applying to the Watford Grammar Schools simultaneously apply to one or more of these schools as part of a broader grammar school strategy.
As co-educational grammar schools are not common in this area, most families with a son or daughter at Year 6 simply apply to the gender-appropriate school. However, for families with children of both genders, or for sixth form applicants, there is sometimes a question about which school offers better provision in a particular subject area. Both schools cover the full A-level curriculum but may have stronger departments in different areas — it is worth attending the open days for both and speaking with current pupils and parents.
Preparation for the Hertfordshire GL Assessment should begin in Year 5 at the latest. A well-structured Year 6 preparation plan typically covers:
From January of Year 6: Regular verbal reasoning practice (3-4 sessions per week), introducing the full range of VR question types. Alongside this, numerical reasoning and non-verbal reasoning practice should be established as a habit. Use official GL Assessment practice papers where available.
From May of Year 6: Move to full timed mock papers under exam conditions. Review mistakes carefully — most children have one or two specific question types where they lose disproportionate marks, and targeted practice on these areas produces quick gains.
In the weeks before September: Maintain practice but reduce pressure. Focus on time management — many children who know the content lose marks by running out of time. Practise pacing strategies explicitly.
At Leading Tuition, our 11+ specialists have extensive experience preparing children for the Hertfordshire GL Assessment and both Watford Grammar Schools. We cover all three reasoning papers in depth and provide full timed mock examinations throughout the preparation period.
Many of our families are also applying to other grammar schools in the region, including Dame Alice Owen's and schools in the London consortium. We design integrated preparation plans that cover multiple applications efficiently. Book a free consultation with our team to get started.
The Hertfordshire GL Assessment — used by both Watford Grammar Schools — is a highly learnable exam, and most children who prepare diligently over a structured period make significant progress. However, certain preparation mistakes are extremely common and can undermine months of hard work. Understanding these pitfalls before you begin is the most effective way to avoid them.
The most frequent mistake is drilling past papers without reviewing mistakes. Many families work through large numbers of practice papers but spend little time understanding why errors occurred. A child who completes twenty papers and makes the same verbal reasoning mistake each time has not improved — they have simply become comfortable sitting papers. Every practice session must include careful, structured review of incorrect answers, with the child explaining why they now understand what went wrong. This metacognitive habit is the single most effective preparation technique and is consistently underused.
A second common mistake is neglecting the designated area implications. Because Watford Grammar Schools give priority to children living within the designated area, families outside those boundaries often need to score significantly above the general threshold to receive an offer. Families who prepare for the "grammar school threshold" without accounting for the designated area premium often find their child grammar-qualified but without an offer from either Watford school specifically. Check the designated area maps early, understand your position, and calibrate your target score accordingly.
Finally, many families start preparation too late. The Hertfordshire exam takes place in early September — meaning children need to be at peak readiness at the very start of Year 6. Preparation that begins only in summer of Year 6 leaves insufficient time for steady skill-building. Starting structured practice in January of Year 6 — and building momentum through spring and summer — consistently produces better outcomes than intensive late cramming.
Yes. Both WGSB and WGSG use the Hertfordshire Consortium GL Assessment 11+ examination — the same verbal reasoning, non-verbal reasoning, and numerical reasoning papers used by grammar schools across Hertfordshire. The test takes place in September of Year 6 and results are released in October. Families register through the Hertfordshire County Council portal and can express preferences for multiple grammar schools on the same registration form.
Yes. Both WGSB and WGSG have designated areas — geographic priority zones that give locally resident qualifying children priority over applicants from further afield with equivalent or lower scores. The designated areas broadly cover Watford and surrounding towns. Children outside the designated area can still receive offers if they score above the threshold and places remain after the local priority group has been satisfied. The exact boundaries are published in each school's annual admissions policy and should be checked each year.
Registration for the Hertfordshire 11+ opens in June of Year 5 and closes in June of Year 6. Families register online through the Hertfordshire County Council 11+ registration portal. Registration is separate from the secondary school application (which is submitted to Hertfordshire in October of Year 6) — both must be completed. Missing the registration deadline means a child cannot sit the test that year.
Leading Tuition offers specialist preparation for the Watford Grammar Schools 11+ entrance examinations. Both Watford Grammar School for Boys and Watford Grammar School for Girls use the Hertfordshire Consortium GL Assessment papers, covering verbal reasoning, non-verbal reasoning, and mathematics. Our specialist tutors work with children from Year 4 through to the September examination, building the reasoning depth and exam fluency these papers demand. We are rated 4.8/5 on Trustpilot by families we have worked with across Hertfordshire and North London. To discuss a structured preparation plan for your child, book a free consultation at leadingtuition.co.uk/consultation or message us on WhatsApp at +44 7360 278449.
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