How to Check a School Catchment Before You Buy

Plenty of homes in England are bought for a school. Rather fewer are bought with an accurate understanding of how the place is actually allocated. “In catchment” gets used on listings as though it were a binding statement about a boundary on a map. For a large share of English schools it is not a boundary at all, and for most of the rest it is only one rung on a ladder of criteria.

This guide separates the three things people mean when they say catchment, shows where the underlying data is published, and sets out what changes every single year.

Three different things, often confused

1. A defined catchment area

Some schools — and many local authorities — do operate a named geographic catchment or “priority admission area”. Where one exists, living inside it puts you into a higher priority group than someone outside it. It is a real boundary, published in the school’s admission arrangements, and it can be redrawn.

2. Straight-line distance

Many schools have no catchment at all and use distance from home to school as the tie-breaker once the higher priority groups are exhausted. This is usually measured as a straight line, though some authorities measure by shortest walking route. The practical consequence is the last distance offered — how far from the school the final child to get a place lived in a given year. That figure moves annually and is not a boundary; it is an outcome.

3. The full oversubscription criteria

This is the one that actually decides the outcome. Where a school receives more applications than it has places, it ranks applicants against its published oversubscription criteria. In practice the ladder usually looks something like: looked-after and previously looked-after children first, then children with a sibling already at the school, then children in the catchment area where one exists, then everyone else by distance — with faith criteria, staff children, or feeder-school links inserted in some arrangements¹.

A sibling-heavy year can consume most of the intake before distance is ever reached. This is why a home 300 metres from the gates can miss out while one 900 metres away gets in — the two children were not in the same priority group.

Where the data actually lives

The school register — GIAS. The Department for Education’s Get Information About Schools register is the authoritative list of every school in England: type, phase, age range, capacity, local authority and status. It is the spine that every other school dataset hangs off.

The admission arrangements. Each admission authority publishes its own determined arrangements — the oversubscription criteria, the published admission number, and the catchment definition if it has one. These are the legally operative document. Nothing on a property listing overrides them.

Applications and offers. The DfE publishes annual statistics on school applications and offers, including school-level preference and offer counts. This is how you see whether a school filled on first preferences or had to reach down the preference list.

Ofsted. Inspection outcomes sit separately again. Note that single-word overall grades for state schools were removed in September 2024, so a school inspected since then will not carry one — we cover what replaced them in how the 2024 Ofsted changes affect school ratings.

What changes every year

This is the part that makes stale catchment advice dangerous.

Admission arrangements are re-determined annually. Every admission authority must determine its arrangements — including the published admission number — by 28 February each year, for entry some eighteen months later. Where changes are proposed, consultation must run for at least six weeks between 1 October and 31 January beforehand¹. Catchment boundaries, criteria order and intake numbers can all move in that cycle.

The last distance offered moves with demand. A school that offered places to children a kilometre away one year can close at 400 metres the next if the sibling cohort is larger. Three years of figures tell you far more than one.

Offers land on fixed national dates. Secondary offers go out on 1 March, primary offers on 16 April, or the next working day¹. If you are buying to be in place for a specific intake, those dates set your real deadline — not the school year.

New housing changes the arithmetic. A completed development feeds children into a catchment several years before additional places are commissioned. Our guide to Surrey primary school capacity walks through how that lag behaves.

The checks to run at the viewing stage

1. Get the school’s determined admission arrangements for the year your child would enter — not this year’s, and not the local authority’s summary. Read the oversubscription criteria in order.
2. Find the last three years of offer outcomes for that school from the local authority’s admissions booklet. One year is noise.
3. Establish whether the school uses a catchment or distance, and if distance, which measurement method.
4. Count the siblings problem. A school with a large existing roll and a small intake has a structurally higher sibling share.
5. Check you have more than one realistic option. A home with one good school in reach and no fallback is a concentrated bet.
6. Confirm the address, not the postcode. Distance is measured from the home, and two houses in the same postcode can sit either side of a cut-off.

Reading the quality signal properly

Catchment answers “can we get in”. It does not answer “is it the right school”. Those are separate research tasks, and the second one is not settled by an inspection grade alone — intake, performance against local and national benchmarks, attendance and destinations all carry information. Our rankings of Surrey primary schools and the best-rated primaries in the county show how differently schools can sit on quality and on demand.

What a report gives you at the address level

Home-Checker’s schools section lists the nearest primary, secondary and independent schools to a specific postcode or address, with the straight-line distance to each, the latest Ofsted rating and inspection date where one exists, capacity, age range and gender — plus richer performance, pupil and oversubscription detail where the underlying data is published. It is the shortlist and the distance arithmetic in one place; the admission arrangements themselves still have to be read. The method is set out on our schools methodology page, and the county area data shows how provision varies above postcode level.

School admission arrangements are set by admission authorities and change annually. Nothing here guarantees a place — always verify the current arrangements and offer outcomes with the school and local authority before you rely on them.

Run a Home-Checker report for any English postcode to see the nearest schools and their ratings alongside crime, flood risk, broadband and the local market.

Footnotes

1. Department for Education, School Admissions Code 2021 — determination of arrangements by 28 February each year, consultation of at least six weeks between 1 October and 31 January, oversubscription criteria, and national offer days of 1 March (secondary) and 16 April (primary), or the next working day. ↩ ↩² ↩³