Apply to Southend High School for Boys, in plain English.
SHSB is a selective boys' grammar on Prittlewell Chase in Westcliff-on-Sea that admits 180 boys a year through the shared CSSE 11+ — the one test used by the Consortium of Selective Schools in Essex. More than 1,000 boys apply for those 180 places: all must reach the pass mark, then places go in rank order of score — but where you live matters, because a quota of up to 5/6ths of the places (150) is reserved for boys living in the school's SS0–SS9 catchment area. Register with the CSSE by 19 June 2026 — separately from, and months before, the October council application.
The three things to know first.
If you read nothing else on this page, read these. They're the bits that catch parents out.
You register for the CSSE 11+ directly with the consortium — by 19 June 2026.
SHSB does not run its own Year 7 test. It uses the CSSE 11+, the single test shared by the Essex selective schools, sat as two papers — English and Maths — and age-standardised. You register through the CSSE website; registration opens 12 May 2026 and closes on 19 June 2026. The test is normally a Saturday in mid-September (19 September 2026). Registering for the test is separate from naming SHSB on your council form — you must do both, and miss the registration and there is no route to a 2027 place.
Where you live decides most of it — up to 150 of 180 places are reserved for the catchment.
Passing the test only gets your son into the ranking. A quota of up to 5/6ths of the 180 places (150) is reserved for boys whose home is in the school's catchment — postcode districts SS0 to SS9 (Southend-on-Sea, Westcliff, Leigh, Rochford, Rayleigh, Benfleet and Canvey Island) — allocated to the highest scorers among them. Only the remaining 30 places go to boys from outside the area. Living inside the catchment is the single biggest factor after the test itself.
Pupil Premium and Free School Meal boys get 'preferential consideration'.
Within both the catchment and out-of-area pools, up to 10% of the places are ring-fenced for boys entitled to 'preferential consideration' — those in receipt of Free School Meals or the Pupil Premium (which includes children of serving Armed Forces personnel). You must declare it on the CSSE Supplementary Information Form when you register — it can't be added later, and evidence is required.
Four steps — the first deadline is summer, not October.
Registering for the CSSE 11+ (step 1) closes on 19 June 2026 — months before the CAF deadline that catches most families out. Registering for the test is not the same as naming SHSB on your council application; you must do both.
If more boys pass than there are places, this order decides.
Boys with an EHCP naming SHSB are admitted first, within the 180. Everyone else must reach the pass mark in the CSSE test; qualifying boys are then ranked by standardised score and placed in the order below. Tap any criterion to see the exact wording.
In plain English: A boy whose Education, Health and Care Plan names SHSB, and who passes the test, must be admitted before the oversubscription criteria are applied. These places come out of the 180.
What the document says: Any child who passes the selection tests and who has an EHCP that names this school, will be admitted prior to the allocation of places to other applicants, and the number of places available to other children within the PAN for Year 7 will be reduced.
In plain English: A boy who is in local-authority care, or who left care through adoption or a special guardianship order, is the first priority category once he has passed the test — ahead of the catchment quota.
What the document says: The school determines admission in the order of priority set out below: i) Looked after children and previously looked after children (note B) who have passed the selection tests.
In plain English: Within the catchment quota, the first slice of places — up to 10% (15 of 150) — is reserved for the highest-scoring in-area boys entitled to 'preferential consideration': those on Free School Meals or in receipt of the Pupil Premium (which the policy defines to include children of serving Armed Forces personnel). You must declare it on the CSSE Supplementary Information Form when you register.
What the document says: 10% of this quota (15 out of 150) is designated for children from within the catchment area who are entitled to 'preferential consideration' (note A). … 'Preferential consideration' is available to children … in receipt of Free School Meals or identified as recipients of the Pupil Premium Grant, at the time of test registration.
In plain English: The bulk of places — a quota of up to 5/6ths of the PAN (150) — go to boys whose home is in postcode districts SS0 to SS9, with the highest scorers offered first until the quota is full. This is the criterion most local parents are competing under.
What the document says: Children whose normal/habitual place of residence … lies within the catchment area postcode areas SS0, SS1, SS2, SS3, SS4, SS5, SS6, SS7, SS8 and SS9 … A quota of up to 5/6ths of the published admissions number (PAN) is reserved at this school for children in this category (150). … the remaining places within the quota are allocated, in rank order of marks, to any applicants from within the catchment area who have exceeded the pass mark.
In plain English: The same 'preferential consideration' priority applies to the out-of-area places: up to 10% of the places left after the catchment quota (3 of 30) are reserved for the highest-scoring out-of-area boys on Free School Meals or the Pupil Premium.
What the document says: 10% of the places remaining after the local quota has been deducted from the PAN (3 out of 30), is designated for children from outside the catchment area who are entitled to 'preferential consideration' (note A).
In plain English: Once the catchment quota is filled, the places left over (30) go to the highest-scoring boys living outside SS0–SS9, regardless of where they live. For a boy outside the catchment, this is the main route — and it takes a high score.
What the document says: All remaining places are allocated, in rank order of marks, to any applicants from outside the catchment area who have exceeded the pass mark: candidates who score higher marks will be allocated places before those who pass at a lower level. Places will be offered until the total PAN has been reached.
A postcode boundary — it reserves up to 150 of the 180 places.
SHSB's catchment is not a radius but a list of postcode districts: SS0 to SS9 — Westcliff-on-Sea, Southend, Leigh, Shoeburyness, Rochford, Hockley, Rayleigh, Benfleet and Canvey Island. It is not a tiebreaker — it is the gate for up to 5/6ths of the places. A quota of 150 of the 180 places is reserved for boys whose home address falls in those postcodes, offered to the highest scorers among them; only the 30 places left over are open to top scorers from outside the area. Score sets your son's rank, but living inside the catchment is what puts him in the running for the bulk of the places.
Distance only breaks a final tie: where boys have identical standardised scores competing for the last place, priority goes first to those entitled to 'preferential consideration', and then to whoever lives nearer the school by straight-line measurement from the front door to the nearest pupil entrance. A boy living closer but outside the SS0–SS9 catchment is still behind every in-catchment boy.
See the catchment on the GrammarBound mapInside SS0–SS9: in the race. Outside: a high score only.
Boy A lives in Leigh-on-Sea (SS9), inside the catchment, so his score puts him straight into the running for the 150 reserved places. Boy B lives in Basildon, outside SS0–SS9: even with a higher score he competes only for the 30 open places left after the catchment quota is filled. Distance never moves an out-of-area boy ahead of an in-catchment boy.
You have two routes, and you can use both.
Waiting list
A boy who sat the test but isn't offered a place is held on a waiting list, ranked by test result within each category, until 31 December of the entry year. When a place comes free, it goes to the next boy in the same category — an in-catchment vacancy to the next catchment boy, an open vacancy to the next out-of-area boy — not first-come-first-served. After 1 January, admission follows the school's in-year arrangements.
A move into the SS0–SS9 catchment after the closing date is taken into account on the waiting list, with documentary evidence of the new permanent address.
Appeal
You have a statutory right of appeal against the decision not to offer a place, exercisable once places have been offered (normally after National Offer Day). Appeals are lodged directly with the school and heard by an Independent Appeal Panel, which is independent of the school and whose decision binds both sides; appealing does not affect your son's waiting-list position.
Joining Year 12 at SHSB.
SHSB welcomes external applicants into its Sixth Form. The catchment area does not apply: Sixth Form entry is decided purely on GCSE results. The number of external places depends on how many of the school's own Year 11 boys stay on, with a minimum of 15 external students admitted. External applicants apply directly to the school, not through the council.
The grade floor.
Applicants need at least 52 points from their best 8 GCSEs (each 9–1 grade scored on its number, but grades below 6 do not count towards the total), and must achieve a minimum of grade 5 in GCSE English and Mathematics and grade 6 in each subject they intend to study at A-level. Some subjects set a higher GCSE requirement, listed in the school's prospectus.
Apply direct to the school.
Sixth-form applications go straight to SHSB through the online form on the school website, by the published deadline. A student must be under 17 on 31 August of the year of entry. Where there are more qualified candidates than places in a subject, selection is by rank order of predicted GCSE points and subject combination; looked-after and previously looked-after applicants who meet the 52-point minimum are given preference. See the SHSB website for the current form and subject requirements.