Colchester County High School for Girls (CCHSG) is one of the most sought-after state grammar schools in Essex and one of the few remaining girls-only selective grammars in the country. Founded in 1909, rated Outstanding by Ofsted, and consistently ranked among the top state schools in the UK by GCSE and A-Level results, CCHS represents a genuinely exceptional secondary education — and at no fee. For families in and around Colchester, it sits at the top of many shortlists. The catch is that the competition is real: 192 places are split between over-subscribed in-area and out-of-area pools, and the school's effective score threshold sits noticeably above the standard CSSE pass mark. This guide sets out exactly what the admissions process involves, what the exam tests, how competitive CCHS is in practice, how it compares to Colchester Royal Grammar School, and what a well-structured preparation plan looks like. The aim is to give you a clear picture of what it takes so you can plan well in advance rather than scrambling as the September test date approaches.
For a full overview of the CSSE exam shared by all Essex grammar schools, see our CSSE 11+ complete guide. And if you are already considering CCHS-specific tuition, our 11+ team can advise on where your daughter currently stands and what she needs to build on before September.
The headline numbers for 2026 entry are set out in the table below. All key dates refer to the process that was open during the 2025–26 academic year for pupils entering Year 7 in September 2026.
| Detail | Information |
|---|---|
| School type | State selective grammar (girls-only academy) |
| Year 7 places | 192 (154 in-area; 38 out-of-area) |
| Exam board | CSSE (Consortium of Selective Schools in Essex) |
| Test date (2026 entry) | Saturday 20 September 2025 |
| Registration deadline | 5pm, Friday 27 June 2025 (SIF on CSSE website) |
| Results to families | 13 October 2025 |
| CAF deadline | 31 October 2025 |
| School place offers | 2 March 2026 (National Offer Day) |
| Ofsted rating | Outstanding |
| Priority area | 25-mile radius from school entrance |
One important procedural point: registration for the CSSE exam is done through the CSSE website directly, not through the school. A single Supplementary Information Form (SIF) covers all CSSE schools your daughter wishes to be considered for. Parents who are Essex residents must also list preferred schools on the Essex Common Application Form (CAF) through the local authority by the 31 October deadline. Missing the June registration deadline means your daughter cannot sit the exam that year.
The CSSE — the Consortium of Selective Schools in Essex — runs a single shared exam that all member schools use. This means your daughter sits the exam once and that single score is used by every CSSE school she has been registered for, including both CCHS and CRGS if families apply to both. The shared format is a significant practical benefit: there is no need to prepare for a different exam structure for each school.
The exam consists of two papers taken on the same day in September:
English paper (70 minutes total): 60 minutes of writing time plus 10 minutes of additional reading time at the start. The paper covers comprehension of a passage and a creative writing task. Questions are open-answer — that is, your daughter must write out her responses in full rather than selecting from multiple-choice options. The comprehension questions test inference, vocabulary in context, character analysis, structural choices, and the effect of language. The creative writing section rewards originality, careful control of tone and structure, and a strong sense of voice. Spelling, punctuation, and grammar are assessed throughout.
Mathematics paper (60 minutes): Covers the Key Stage 2 National Curriculum, including all four operations, fractions, decimals and percentages, ratio and proportion, algebra basics, geometry, statistics, and multi-step problem solving. Like the English paper, answers are written in full — not multiple choice. This matters for preparation because children need to be able to show working clearly and efficiently under time pressure, not just recognise a correct answer from a list.
There is no Non-Verbal Reasoning or Verbal Reasoning in the CSSE exam. This sets it apart from GL Assessment-based 11+ exams used in other regions, and it means preparation time is not split across four separate subjects — it is concentrated on English and Maths at a level of depth and quality that goes beyond standard KS2 work.
All scores are age-standardised after the exam. This is designed to neutralise any advantage for older children in the year group, and it means a younger child sitting in September who performs slightly below an older child may end up with a higher standardised score once the adjustment is applied. Families should not assume that being younger is necessarily a disadvantage.
For the full breakdown of how the CSSE exam is structured, what each sub-section requires, and how scores are calculated, see our complete CSSE exam guide for Essex grammar schools.
CCHS is one of the more competitive CSSE schools to enter, and it is worth understanding why. The school has 192 Year 7 places, which is a relatively large number by grammar school standards. However, the places are divided into two pools: 154 for girls who have lived within 25 miles of the school since 31 October of their Year 6, and just 38 for those outside this priority area. In practice, this means out-of-area applicants are competing for fewer than 20% of the available seats, making a very high score essential for that group.
The standard CSSE pass mark — the minimum score below which no CSSE school will offer a place — is 303 on the standardised scale. CCHS, however, applies a higher internal threshold of approximately 320. Scoring at or just above 303 is unlikely to be enough to secure a place at CCHS in a typical year. The most competitive applicants are usually targeting 85–90% or above on CSSE practice papers, which tends to correspond to standardised scores comfortably in excess of 320.
It is also worth noting that CCHS is a girls-only school. This restricts the eligible pool compared to co-educational grammars but does not reduce the competition in any meaningful way — the school draws from a wide catchment and is well known across north Essex, Suffolk, and beyond. Many families from outside the 25-mile priority area still apply for the 38 out-of-area places, meaning competition in that pool can be particularly fierce.
From an academic results perspective, CCHS is consistently among the highest-performing state schools in Essex. Its pupils routinely achieve strong outcomes at GCSE and A-Level, and a significant proportion go on to Russell Group universities and competitive degree programmes. The school has held Ofsted's Outstanding rating and was one of the first Science Specialist schools in the UK — a designation that reflects its long-standing commitment to rigorous science education. Beyond the classroom, the school offers a rich extracurricular programme including debating, creative writing, economics club, language club, art, and a range of charity and leadership initiatives. It is a school where academic ambition and broader development are taken equally seriously.
Preparing for CCHS? Let's talk.
Our tutors specialise in the CSSE 11+ and offer a free 30-minute consultation to assess where your daughter is and what she needs to succeed.
Book a Free ConsultationColchester County High School for Girls and Colchester Royal Grammar School (CRGS) are the two flagship state selective grammars in Colchester, and they sit close together in the minds of most families considering the area. Both use the CSSE 11+ exam, both are Ofsted Outstanding, and both deliver exceptional academic results. Understanding how they differ can help families make a more considered decision about which to prioritise — and, importantly, whether to apply to both.
The most fundamental distinction is straightforward: CCHS is girls-only; CRGS is co-educational. For some families this is the defining factor, and it shapes everything from school culture to peer dynamic to pastoral care. Research on single-sex education suggests benefits in confidence-building and engagement for some girls, particularly in STEM subjects, though outcomes at both schools are strong regardless. The choice between single-sex and co-educational environments is ultimately a values and fit question as much as an academic one.
In terms of scale, CCHS has 192 Year 7 places and approximately 1,180 pupils in total. CRGS is slightly smaller and co-educational, meaning its pupil composition is naturally different. Both schools have their own admissions criteria and oversubscription rules, but they share the CSSE exam format entirely — the same two papers, the same standardised scoring methodology, the same September test date.
Because the exam is identical and sat on the same day, families do not need to choose between schools before the exam. A single SIF can register a child for multiple CSSE schools simultaneously, and parents then list their preferences on the CAF after results come out in October. This means there is no strategic disadvantage to applying to both CCHS and CRGS together. Many families do exactly that, ranking them according to preference on the CAF once they have the score in hand.
What does differ between the two schools is the specific oversubscription criteria and score thresholds used when places are allocated. CCHS applies its 25-mile priority area split (154 in-area, 38 out-of-area), while CRGS has its own set of criteria. Families should review both schools' admissions policies carefully and note that a child who scores well above the threshold has a good chance at both, while a child on the margin may need to think more carefully about which is more attainable given their address. For tailored guidance on both schools, our 11+ tuition service includes a detailed admissions consultation as part of the onboarding process.
Effective preparation for the CSSE 11+ needs to start at least 12 months before the September exam date — ideally in Year 5, and for children who find English or Maths more challenging, earlier is better. The key is to build solid foundations before moving into timed, exam-style practice. Rushing into practice papers before the underlying skills are secure tends to produce children who can attempt questions but cannot explain their reasoning or adapt when a question is framed differently. CCHS requires real depth, not just drilling.
English preparation: The CSSE English paper rewards children who read widely and have developed genuine sensitivity to language. A child who reads regularly — across different genres, including non-fiction and poetry — will find inference questions and language analysis far more natural than one who has only practised comprehension worksheets. Encourage wide, regular reading and make it a habit to discuss books together: what is the author trying to make you feel here? Why did they choose that word? Alongside reading, creative writing practice is essential. The CSSE writing task rewards originality and a controlled sense of voice. Practise writing short pieces in different styles — narrative, descriptive, from unusual perspectives — and get feedback on structure, vocabulary, and flow. Grammar, punctuation, and spelling should be reinforced continuously, as they are assessed throughout the paper.
Mathematics preparation: The CSSE Maths paper covers the full KS2 curriculum, so any gaps in foundational knowledge need to be identified and filled early. Common weak points include fractions and ratio, algebra basics, interpreting data, and multi-step word problems. The exam is not multiple choice, which means your daughter must be able to set out working clearly and arrive at a final answer efficiently under time pressure. Timed practice is important, but only once the underlying concepts are secure. A child who panics over fractions under pressure is not going to benefit from more timed papers — she needs to rebuild confidence with those topics first.
Practice papers and timed conditions: From around 9–10 months before the exam, introduce full CSSE practice papers under realistic timed conditions. Mark them carefully, identify patterns in mistakes (is it always multi-step problems? comprehension inference questions?), and target those areas specifically. Avoid the trap of treating practice papers as the only form of preparation — they reveal gaps but do not fill them on their own.
Wellbeing and realistic expectations: The CSSE 11+ is a demanding exam and children taking it are ten or eleven years old. Preparation should be structured and purposeful, but it should not dominate every week in a way that creates anxiety or burnout. A child who enters the September exam calm, confident, and well-rested will almost always perform better than one who has been drilled to exhaustion. Build in rest, maintain hobbies and activities, and frame the exam as one opportunity among several rather than the only path to success.
For a structured approach to the full academic year of preparation, see our detailed guide to the CSSE exam and how to prepare for it. And for school-specific support focused on CCHS, you can find more information on our CCHS 11+ tuition page.
Our tutors work with girls preparing for the CSSE 11+ every year, and CCHS is one of the schools we know well. We have seen the full range — children who are already strong in both English and Maths and need stretching beyond the curriculum, children who have one clear gap that is dragging their overall score down, and children who need help as much with exam technique and confidence as with the academic content itself.
We begin with a free 30-minute consultation to understand where your daughter is right now: her current year group, what she has covered, where she finds the exam content most difficult, and what timeline you are working to. From there, we put together a plan — not a generic one, but one that reflects her actual starting point and the specific demands of CCHS's admissions process.
All our 11+ tuition is one-to-one, delivered by tutors who have themselves attended highly selective schools or have significant experience teaching the CSSE syllabus. Sessions are structured around real progress rather than time elapsed: we track her performance across English and Maths systematically, adjust the focus as gaps close, and keep parents informed throughout with clear, honest feedback on where she stands.
Our results speak for themselves: we have a 95% success rate for students who sat competitive grammar school entrance exams in 2025, and CSSE schools including CCHS account for a meaningful part of that. Our tutors are available for one-to-one sessions in-person and online, making it easy to fit preparation around your family's schedule.
To start the conversation, book a free consultation via WhatsApp or get in touch through our 11+ tuition page. There is no obligation — we will give you an honest assessment of your daughter's position and what we think will make the most difference before September.
Colchester County High School for Girls offers 192 places in Year 7. Of those, 154 are reserved for girls living within the school's 25-mile priority area, with 38 places available for out-of-area applicants. Competition is fierce across both pools — only girls who score above the school's higher threshold of approximately 320 (compared to the standard CSSE pass mark of 303) are realistically in contention for a place. The 38 out-of-area seats are particularly competitive, and a score well above the threshold is typically needed to be confident of an offer from that pool.
The CSSE 11+ for CCHS consists of two papers: an English paper (60 minutes plus 10 minutes of additional reading time) covering comprehension and creative writing, and a Mathematics paper (60 minutes) testing the KS2 National Curriculum including problem solving. Neither paper is multiple-choice — answers are written in full. There is no Non-Verbal Reasoning or Verbal Reasoning section. Scores are age-standardised to remove any advantage for older pupils in the year group. Both papers are sat on the same day in September, typically in a school venue rather than at CCHS itself.
The standard CSSE pass mark is 303, but CCHS applies a higher internal threshold of approximately 320. In practice, the most competitive applicants are scoring well above that — aiming for 85–90% on CSSE practice papers under timed conditions is a sensible target. Because scores are age-standardised, a younger child scoring slightly lower in raw marks may still be ranked equivalently to an older child. There are no guarantees with selective admissions, but consistent performance at 85%+ on quality practice papers is a strong indicator of readiness for the real exam.
CCHS uses a 25-mile priority area rather than a traditional strict catchment. Girls who have lived within 25 miles of the school since 31 October of their Year 6 are eligible to compete for the 154 in-area places. The remaining 38 places are open to all qualifying candidates regardless of distance. Living outside the priority area is not a barrier to applying, but competition for those 38 out-of-area places is very high. Families from Suffolk, Chelmsford, and other surrounding areas do apply and receive offers each year — a high score is the primary factor.
For September 2026 entry, the CSSE 11+ exam was sat on Saturday 20 September 2025. Registration via a Supplementary Information Form (SIF) on the CSSE website closed at 5pm on Friday 27 June 2025. Test results were sent to families on 13 October 2025. The Common Application Form (CAF) deadline was 31 October 2025, and school place offers are announced on 2 March 2026 — National Offer Day. For 2027 entry, similar deadlines will apply in the 2026–27 academic year. Check the CSSE website each May when new registration opens.
CCHS and CRGS both use the CSSE 11+ exam and sit it on the same day. The key difference is that CCHS is girls-only with 192 places, while CRGS is co-educational. Both schools are Ofsted Outstanding and achieve very strong results at GCSE and A-Level. Because the exam is identical, families do not need to choose between the two before the test — a single SIF registers a daughter for both, and parents then rank preferences on the CAF after scores are released. Many families apply to both schools and make a final decision based on score and preference once offers are known.