Pupil yield and education contributions on a housing scheme
Education contributions are a yield factor times a cost multiplier, minus the places that already exist. Each part of that sum can be checked, and often reduced.
An education contribution on a housing scheme is a section 106 payment calculated by multiplying a pupil yield factor by the number and type of dwellings, then by a cost per school place. Every part of that sum is arguable. The yield factor comes from the education authority's own data, the capacity position comes from schools within statutory walking distance, and the cost multiplier is indexed. If any of the three is wrong, the request fails one of the tests in regulation 122.
Developers concede these contributions far too easily. A request arrives from the county council with a spreadsheet attached, and it goes into the appraisal unchallenged.
How education authorities forecast demand
The authority starts from the school census and its own place-planning area forecasts, which project roll numbers forward over several years using birth data, migration and existing commitments. Against that forecast it sets net capacity, calculated to Department for Education methodology for each school.
New housing is added on top as additional demand, converted into pupils by a yield factor. Where the forecast shows a shortfall in the relevant planning area during the years your scheme delivers, the authority asks for a contribution towards creating the places.
The forecast is a document you are entitled to see. Ask for the place-planning area, the schools within it, the roll and capacity for each, and the years covered. Requests that cannot produce that evidence rarely survive scrutiny.
Where pupil yield factors come from
A yield factor is the average number of primary or secondary pupils generated by one dwelling, derived by matching the school census to address-level housing data across the authority. Most authorities publish separate factors for primary, secondary and post-16, and many differentiate by dwelling size.
That differentiation matters more than anything else in the calculation. One-bedroom and two-bedroom flats generate materially fewer school-age children than four-bedroom houses, and a scheme weighted towards smaller units should not be charged on an all-dwellings average. If the authority applies a single blended factor to a block of one-bedroom flats, challenge it.
Check three things before accepting the factor:
- Its date and the census years it draws on. Factors calculated a decade ago carry a different age profile.
- Whether it excludes dwellings that cannot house children, such as age-restricted or student accommodation.
- Whether the same factor is being applied to affordable and market units without evidence that occupancy differs.
Where the scheme includes a specialist product with its own occupancy pattern, an Affordable Housing Statement that sets out the tenure and unit mix clearly makes the yield argument easier to run.
Net capacity and the surplus places argument
A contribution is only justified where the places do not already exist. That means looking at spare capacity in schools within the statutory walking distances, which are two miles for children under eight and three miles for older children, measured by available walking route rather than as the crow flies.
Surplus places are the developer's strongest argument and the least well evidenced by authorities. A school 400 m from the site running 30 places below capacity across the relevant year groups is a direct answer to a primary contribution request. Falling rolls in many areas have made this argument stronger than it was.
Look also at committed capacity. Where the authority has already secured funding for an expansion, or has permission for a new school on an allocated site, ask whether your scheme's pupils are already counted in that provision. Paying twice for the same place is exactly what regulation 122 exists to prevent.
Testing the request against regulation 122
Regulation 122 of the Community Infrastructure Levy Regulations 2010 allows an obligation to be taken into account only where it is necessary to make the development acceptable in planning terms, directly related to the development, and fairly and reasonably related in scale and kind to it. The tests are legal, not policy, and they apply to each obligation separately.
| Test | The question to put |
|---|---|
| Necessary | Is there an evidenced shortfall of places in the relevant planning area during the delivery years? |
| Directly related | Are the schools named ones your residents could realistically attend? |
| Fairly and reasonably related in scale | Does the yield factor match the unit mix, and is the cost multiplier current and correctly indexed? |
The pooling restriction that once limited contributions to five obligations per project was removed in 2019, so authorities can now pool freely towards a single school. That removes an old objection. It does not weaken the three tests.
Cost multipliers and indexation
The cost per place normally comes from published Department for Education cost guidance for new school places, sometimes adjusted by a regional factor and indexed to a construction cost index. Ask which edition, which index, which base date and which regional factor.
Two errors recur. Contributions are indexed twice, once inside the multiplier and again in the agreement. And land cost is included in a multiplier that already assumes expansion on an existing site.
Where the total contribution package threatens the scheme, that is a viability question rather than a regulation 122 question, and it belongs in a Viability Assessment prepared to the recognised methodology rather than in correspondence.
An illustrative calculation
Illustrative example, using round figures rather than any real authority's published factors. A scheme of 100 dwellings comprises 40 one-bedroom and two-bedroom flats and 60 houses of three bedrooms or more. The authority applies a primary yield of 0.1 pupils per flat and 0.3 per house, giving 4 plus 18, or 22 primary pupils. At an assumed cost of £20,000 per place, the primary contribution is £440,000.
Now apply the capacity test. If two schools within the walking distance hold 15 surplus primary places across the relevant year groups, the justified request drops to 7 places, or £140,000. The figures here are illustrative only, and the real ones come from the authority's published factors and the current cost guidance.
That gap is why the arithmetic is worth checking line by line.
Small sites and cumulative impact
Authorities often set a threshold below which they do not seek education contributions, commonly around ten dwellings, on the basis that the pupil yield is too small to fund anything meaningful. Where a threshold is published, hold the authority to it.
Cumulative impact arguments cut both ways. An authority can point to several small schemes in one place-planning area to justify a pooled contribution. A developer can point out that the forecast already includes those schemes as commitments, so counting them again inflates the shortfall.
Get the heads of terms right early, because education is usually one of several requests arriving at the same time alongside health, open space and transport. A single tracked schedule listing each request, the evidence offered, and your response against the three tests is worth more than a series of separate email threads. If you are still building the evidence base for the application itself, the report index sets out which supporting documents a scheme of that scale normally needs.
This is general guidance, not legal advice. Yield factors, cost multipliers and capacity data are authority-specific, so check the position with your local planning authority or a qualified professional before relying on it.
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Frequently asked questions
What is a pupil yield factor?
It is the average number of school-age children generated by one dwelling, calculated by the education authority from the school census matched to address-level housing data. Most authorities publish separate factors for primary and secondary phases, and better ones differentiate by dwelling size, because smaller flats generate far fewer pupils than family houses.
Can I challenge an education contribution?
Yes. Ask for the place-planning area, the schools in it, their roll and net capacity, the forecast years and the source of the yield factor and cost multiplier. Then test the request against regulation 122 of the Community Infrastructure Levy Regulations 2010. Surplus places within statutory walking distance are usually the strongest ground.
How far away can a school be and still count?
Statutory walking distances are two miles for children under eight and three miles for children of eight and over, measured along an available walking route rather than in a straight line. Schools with surplus places inside that distance are directly relevant to whether new provision is necessary, and should be named in the authority's evidence.
Does the pooling restriction still apply?
No. The limit on pooling more than five obligations towards a single infrastructure project was removed in 2019, so authorities can now pool contributions from many schemes towards one school expansion. That change does not relax the three tests in regulation 122, which still apply separately to every obligation sought.
Are small sites expected to pay?
Many authorities publish a threshold, often around ten dwellings, below which they do not seek education contributions because the yield is too small to fund anything. Where such a threshold is published, hold the authority to it. Where it is not, the necessity test still has to be met on the evidence for your specific scheme.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.