Southend High School for Boys 11+ Guide 2026

Southend High School for Boys (SHSB) is one of Essex's most sought-after selective grammar schools — and one of the most competitive. Situated in Prittlewell Chase, Southend-on-Sea, it draws applicants from across the borough and well beyond, using the CSSE 11+ exam shared by the Consortium of Selective Schools in Essex. For 2026, the 11+ tests will be held on Saturday 19th September 2026, with results sent to parents by the CSSE in October 2026 and Common Application Forms due by 31st October 2026. This guide covers the exam format, places, score thresholds, how SHSB sits within the Essex grammar landscape, and how to structure your son's preparation for success.

Our specialist 11+ tuition team has supported families targeting SHSB and other CSSE schools with consistent results — we are rated 4.8/5 on Trustpilot. You can message us on WhatsApp at any time for a no-obligation conversation about your son's preparation.

SHSB Admissions at a Glance

Before diving into the details, here is a quick-reference summary of the essential facts every family applying to Southend High School for Boys needs to know for 2026 entry.

SHSB is a boys' selective grammar school with academy status, meaning it operates independently of the local authority while remaining free to attend for all pupils. The school sits in the north-west of Southend-on-Sea and has long been a flagship grammar school for the borough, sending strong cohorts to Russell Group universities each year. The Sixth Form at SHSB admits students regardless of gender, making it a mixed environment from Year 12 onward, though Years 7 to 11 are boys-only.

What Is the CSSE 11+ Exam? Format, Papers and What It Tests

SHSB is a member of the CSSE — the Consortium of Selective Schools in Essex — which administers a shared entrance examination used by selective grammar schools across Essex and Southend. This means your son registers once, sits one set of papers on one day, and can use that result to apply to multiple CSSE member schools. For a comprehensive overview of all Essex CSSE schools and how the consortium works, see our Essex Grammar Schools 11+ Guide.

The CSSE exam at SHSB consists of two written papers, both sat on the same Saturday morning in September of Year 6:

Paper 1 — English (50% weighting). The English paper is divided into two sections. The reading comprehension section uses one or more extended passages of prose and rewards pupils who can make inferences from the text, identify the effect of language choices, and analyse content at a level of depth beyond simple surface retrieval. The second section is a continuous writing task — an extended piece of creative or discursive writing completed within a time limit. This rewards structured planning, a wide and precise vocabulary, and the ability to sustain quality at length. Approximately ten minutes of reading time is given before the comprehension section begins. Questions are written-answer throughout; there is no multiple-choice element.

Paper 2 — Mathematics (50% weighting). The Maths paper tests the full Key Stage 2 National Curriculum: arithmetic, fractions, decimals, percentages, ratio, algebra, geometry, measurement, and statistics. Multi-step problem-solving questions feature prominently, and written working is required. The CSSE Maths paper rewards mathematical reasoning and the ability to combine multiple concepts — it is not a drill-based test that rewards only speed and repetition.

A key distinguishing feature of the CSSE — and one that families sometimes miss — is that there are no Verbal Reasoning or Non-Verbal Reasoning papers. Unlike many other 11+ systems used in Kent, Birmingham, or parts of London, all CSSE preparation should be focused exclusively on English and Maths. Families whose sons have been preparing for VR/NVR-heavy tests elsewhere will need to refocus their preparation if they intend to target SHSB or any other CSSE member school.

Both papers are scored and then age-standardised: the raw marks are adjusted based on the child's exact date of birth to correct for the advantage that September-born children would otherwise have over August-born children in the same year group. The two standardised scores are combined to produce a single CSSE score for each candidate.

How Many Places Does SHSB Offer and What Score Do You Need?

Southend High School for Boys offers approximately 180 Year 7 places each year. With demand consistently exceeding supply, SHSB is typically several times oversubscribed, which means that understanding the score threshold is only part of the picture — admissions priority and distance tiebreakers play a critical role too.

The CSSE standardised score at which boys are generally considered for a place at SHSB is approximately 300 to 310. Historical data suggests that candidates scoring below this range are not normally offered a place. However, reaching the qualifying threshold does not guarantee an offer for all applicants. Once a candidate has met the qualifying threshold, places are allocated based on the admissions priorities set out in SHSB's admissions criteria. Boys who reside within the Southend-on-Sea borough — particularly those with SS postcodes — receive priority over out-of-borough applicants. Within each priority band, distance from the school acts as the tiebreaker.

What this means in practice: a boy who scores just above the qualifying mark and lives within the priority postcode area is likely to receive an offer if sufficient places remain within his priority band. A boy scoring the same mark from a non-priority postcode may not, if the school fills from within the priority catchment at that score level. Families applying from outside the Southend borough should aim to score noticeably above the qualifying mark — targeting a standardised score of 315 or higher provides a meaningful buffer. On well-calibrated CSSE practice papers, this translates to approximately 80 to 85% or better across both papers.

It is also worth noting that SHSB and Westcliff High School for Boys (WHSB) — Southend's other flagship CSSE grammar — draw from the same pool of applicants and sit in close proximity to each other. Many families apply to both schools simultaneously using the same CSSE result, naming each on their Common Application Form. Both schools have approximately 180 places and similar competitive dynamics, though each has its own admissions criteria and culture. The two schools are entirely separate institutions; applying to one has no bearing on the other.

Registration, Key Dates and the Application Process for 2026 Entry

The admissions process for SHSB Year 7 entry involves two separate steps that must both be completed correctly and on time. Missing either deadline can prevent your son from being considered for a place.

Step 1 — CSSE Registration. Registration for the CSSE exam is handled directly via the CSSE at csse.org.uk — not through the school. For 2026 entry (sitting in September 2026, starting Year 7 in September 2027), CSSE registration typically opens in mid-May and closes in late June. This is a firm deadline; late registrations are not normally accepted. Once registered, your son will receive a test slot for the September exam day.

Step 2 — Common Application Form (CAF). After your son has sat the CSSE exam and results have been released in October 2026, parents must name SHSB as a preference on their Local Authority Common Application Form. This form is submitted to your home Local Authority — not to SHSB directly — and the deadline is 31st October 2026. This is a national deadline that applies across all Local Authority areas. The school is explicit: parents must complete the CAF by 31 October even if their son has passed the 11+ test; failing to do so means no offer can be made.

It is important to note that SHSB does not hold or manage waiting lists. All waiting lists for SHSB places are maintained by the Southend Admissions Department. If you wish to enquire about a waiting list position after National Offer Day, contact Southend Admissions directly on 01702 212 934 or at admissions@southend.gov.uk — do not contact the school itself, as the school has no access to waiting list information.

The Open Evening for Year 5 pupils interested in September 2027 entry is held on Thursday 25th July 2026. The Headteacher speaks at 5.45, 6.45, and 8.00 pm. No appointment is required. This is an excellent opportunity for families to visit the school, ask questions, and collect the prospectus ahead of the CSSE registration window.

National Offer Day — when Year 7 school places are allocated — falls on 1st March 2027 for September 2027 entry.

How Does SHSB Compare with Other Essex Grammar Schools?

Understanding where SHSB sits within the wider Essex grammar school landscape helps families make informed choices about which schools to name on the CAF and how to set their preparation targets.

SHSB is one of four grammar schools in the Southend-on-Sea area that participate in the CSSE, alongside Westcliff High School for Boys (WHSB), Westcliff High School for Girls (WHSG), and Southend High School for Girls (SHSG). All four schools use the same CSSE exam. WHSB and SHSB are the two boys' grammar schools; WHSG and SHSG are the girls' counterparts. Because all four draw from the same pool of CSSE candidates, a boy who passes the CSSE is typically in a position to apply to both boys' grammars simultaneously.

Beyond Southend, the CSSE consortium includes grammar schools in Colchester and Chelmsford. King Edward VI Grammar School in Chelmsford (KEGS) is among the most competitive in Essex, with score thresholds often running higher than those in Southend. Colchester Royal Grammar School (CRGS) and Colchester County High School for Girls (CCHSG) are also CSSE members. For families considering multiple schools across Essex, a strong CSSE score genuinely opens doors across the whole consortium — but each school has its own priority catchment and admissions criteria, so it is worth understanding each school's specific process when drawing up your CAF preferences.

In terms of academic outcomes, SHSB consistently achieves strong results at GCSE and A-level. A significant proportion of each cohort progresses to Russell Group universities. The school's location in Southend means it serves a broad range of communities from across the borough and surrounding areas, and its Sixth Form — which admits both boys and girls from Year 12 — provides a strong post-16 pathway. Families considering SHSB alongside other Essex grammars will generally find that CSSE preparation that targets one school applies equally to the others, given the shared exam.

How Should Your Son Prepare for the CSSE 11+ Exam?

Effective preparation for the CSSE at SHSB needs to be structured and sustained. The exam rewards genuine academic depth — not surface familiarity with question formats — which means that preparation works best when it begins early and builds across a long timeline.

Year 4 — Laying the foundations. The strongest CSSE candidates are typically boys who have built a broad reading habit and genuine arithmetic fluency well before formal 11+ preparation begins. Encouraging regular reading across fiction and non-fiction, poetry and prose, in Year 4 pays significant dividends in the comprehension paper two years later. Strong vocabulary, an instinct for inference, and the ability to read carefully are skills that develop over time — they cannot be rushed in the weeks before an exam. Equally, solid mental arithmetic and times tables fluency in Year 4 means that Year 5 preparation can focus on reasoning and problem-solving rather than remediation.

Year 5 — Structured preparation begins. From Year 5, preparation should become deliberate and systematic. This means working through the key skills the CSSE tests: reading inference and literary analysis, grammar and vocabulary, extended writing technique, and the full range of KS2 maths topics including geometry, fractions, decimals, algebra, and ratio. Timed practice should be introduced progressively during Year 5 — not rushed — so your son builds stamina and confidence with the format over time rather than in a sudden burst.

Three aspects of the CSSE deserve particular attention during preparation. First, the continuous writing task in the English paper is a consistent differentiator: boys who can plan their response quickly, write with structure and voice, and sustain quality across an extended response — typically eight to ten paragraphs — gain a meaningful advantage over those who produce short or unstructured work. Second, the multi-step maths questions require mathematical reasoning rather than mere recall: practising problems that ask your son to combine multiple concepts is far more effective than drilling methods in isolation. Third, since scores are age-standardised, the goal is not to rush but to reason accurately and thoroughly — a considered, well-structured response consistently beats an incomplete but fast one.

Year 6 — Mock exams and final preparation. In the months before the September exam, the focus shifts to full timed mock papers under realistic conditions. Mock tests serve two purposes: they build the exam stamina needed to produce two full written papers back-to-back, and they generate diagnostic data that reveals exactly where further work is needed. After each mock, the priority is to understand precisely where marks were lost and address those areas specifically — not simply to accumulate further sittings without targeted review.

Families should note that CSSE registration closes in late June before the September exam. This means preparation plans that begin in July and August of Year 6 are starting too late to influence the July registration deadline. Starting formal preparation in Year 5 — with light foundation work in Year 4 — remains the most effective timeline for targeting SHSB.

How Can Leading Tuition Help with Southend High School for Boys 11+ Preparation?

Leading Tuition's 11+ tuition specialists have in-depth knowledge of the CSSE exam and the precise skills that separate top-scoring candidates at SHSB from the rest of the field. We work with boys from Year 4 through Year 6, building programmes that are specifically calibrated to the CSSE format and your son's current level relative to the SHSB benchmark.

For English, our specialist tutors concentrate on the skills the CSSE paper actually rewards: genuine reading comprehension that goes beyond surface retrieval, the ability to identify inference and analyse language with precision, and — critically — the extended writing technique that the continuous writing task demands. We work on planning structure, vocabulary range, and sustained writing quality over time, so that the extended writing task becomes a strength rather than a source of anxiety. All practice uses authentic CSSE-style materials, ensuring that your son is thoroughly familiar with the precise format, timing, and question style he will encounter in September.

For Mathematics, our tutors cover the full KS2 curriculum with particular emphasis on multi-step problem-solving, the application of multiple concepts within a single question, and the reasoning skills the CSSE Maths paper is specifically designed to reward. We identify topic gaps early and address them systematically, so your son can approach any CSSE question with flexibility rather than a rigid, pattern-matching approach.

Full diagnostic assessments and regular timed mock papers allow us to track progress accurately and adjust the preparation plan as your son develops. We communicate clearly with parents after every session so that preparation at home can reinforce what we cover in tuition. Leading Tuition is rated 4.8/5 on Trustpilot by families across the UK, and our students targeting selective grammar schools have achieved a 95%+ success rate in recent years. Whether your son is in Year 4 and just beginning to think about the 11+, or in Year 6 with the September exam approaching, we can help you build a clear plan and execute it effectively.

Related guides: Southend High School for Girls 11+ Guide 2026.

Frequently Asked Questions About SHSB 11+ Entry