How School Catchment Areas Actually Work in England
If you've ever assumed that living near a school guarantees your child a place, this guide is essential reading. We explain how catchment areas actually work, why the boundary moves every year, and what number you really need to know.
The myth of the fixed catchment boundary
Ask most parents how school admissions work and they'll tell you something like: "There's a catchment area, and if you live inside it you get in." It's a reasonable assumption. It's also, for the vast majority of state schools in England, wrong.
Here is the reality: most state schools have no fixed legal catchment boundary at all. The term "catchment area" does not appear in the School Admissions Code as a defined geographic zone that automatically entitles you to a place. What it usually refers to, informally, is the furthest distance from the school at which a child was offered a place in the most recent admissions round. That distance shifts every year. In a year when many siblings of current pupils apply, the effective "catchment" can shrink considerably - sometimes by hundreds of metres. In a quieter year it expands again.
This distinction matters enormously. Parents have moved house, paid a premium for a property, and then found themselves on the waiting list because they assumed a boundary was fixed when it was not.
How oversubscription criteria actually work
Every state school in England has an admissions policy that sets out, in order, who gets priority when there are more applications than places. The School Admissions Code requires all maintained schools to list their criteria in a specific hierarchy. For most community and voluntary controlled schools it looks like this:
1. Looked-after children and previously looked-after children. Children in the care of a local authority, or those who were in care and subsequently adopted, always go to the top of the list. This is a legal requirement.
2. Siblings of children already at the school. Most schools give priority to brothers and sisters of pupils who will still be attending when the applicant would start. This is the group that most compresses distance in popular schools - a cohort heavy with siblings leaves fewer places for distance-based applicants.
3. Distance from home to school. Only after looked-after children and siblings does the school start measuring who lives closest. The school's policy will specify exactly how distance is measured - straight line (as the crow flies) from your home address to the school's main gate is the most common method, though some schools use the nearest available walking route.
Some schools add further criteria - a medical or social need category, for instance, which sits between looked-after children and siblings. Always read the full policy, not a summary.
Distance as the real tiebreaker
For most families who are not in looked-after care and who do not have a sibling already at the school, distance is the only thing that matters. You are competing for whatever places remain after the higher-priority groups have been satisfied.
This means the single most useful number when researching a school is the last-offered distance - the furthest distance at which a child was offered a place in last year's admissions round. You will usually find it published in the school's admissions policy or in the local authority's annual admissions statistics.
A last-offered distance of 800 metres tells you that in an average year, you need to live within roughly that radius to have a realistic chance. But treat it as a guide rather than a guarantee. In a sibling-heavy year that figure might drop to 600 metres. In a year when the school expands its intake, it might stretch to a kilometre or more. The trend over several years is more informative than any single figure.
Faith schools and grammar schools
Distance-based oversubscription criteria apply straightforwardly to community schools and most academies. Two large categories work quite differently.
Faith schools - Church of England, Catholic, Jewish, Muslim and others - are permitted to prioritise children on the basis of religious practice. A Catholic school might give first priority to practising Catholics who attend Mass regularly, evidenced by a priest's reference called a supplementary information form. Within each faith category, distance then acts as a tiebreaker. The practical result is that living close to a faith school is no help if you do not meet the faith criteria, and living far away is no bar if you do. Always check whether a faith school requires a supplementary form - missing the deadline for that form is one of the most common and avoidable admissions mistakes.
Grammar schools in the remaining selective areas of England admit primarily on the basis of the 11-plus test score. Distance plays a very limited role and usually only applies when two children score identically. If you live in a selective area, your child's score is the primary factor, not your address.
Finding last-offered distance for any school
The best sources for last-offered distance are:
- The school's own admissions policy, usually published on its website each September for the following year's intake - Your local authority's admissions guide, which typically lists last-offered distances for all schools in the area - School Performance and Admissions data published annually by the DfE
Policies for the coming September intake must be published by 15 March each year. Figures for the round that just closed are usually available by July. If a school's policy does not publish last-offered distance directly, you can request this information from the school or local authority - they are required to share it.
Using our catchment checker
Our [catchment checker](/catchment-checker) pulls together nearby schools by distance from any postcode and shows you the estimated probability of a place based on last-offered distance data we collect from published admissions policies. Enter your postcode, select primary or secondary, and we will show you which schools are realistically within range - and flag where sibling or faith criteria are likely to dominate.
The tool is a starting point, not a guarantee. We display a clear disclaimer alongside every result because no tool can predict how many siblings will apply in any given year. What it can do is tell you which schools are worth reading the full admissions policy for, and which ones you are probably too far from to be in contention.
What to do with this information
If you are still a year or more away from applying, distance data can genuinely inform a house move. If you are approaching the January application deadline, focus your energy on reading the admissions policies for your realistic options and applying to at least four schools in your ranked preference list - never just one.
And if a school you want is borderline on distance, check whether an appeal is viable. Infant class size appeals are very hard to win, but junior and secondary appeals have a reasonable success rate if you can demonstrate that the decision to refuse was unreasonable or that the school's process contained an error.
The admissions system is more navigable than it first appears - you just need to know which numbers actually matter.