"When does my child have to start school?" is one of the most consistently searched questions by parents of young children in England — and the answer is more nuanced than most people expect. The law sets a compulsory school age, but school starting practices, deferral options, and the treatment of summer-born children create a web of rules that can be genuinely confusing. This guide sets out everything you need to know clearly and practically.
England has one of the youngest school starting ages in the world. Most children start full-time school at age 4 or 5 in Reception — years before compulsory school age in countries like Finland (7), Sweden (6), and Germany (6). The debate about whether early formal schooling benefits young children is ongoing and influences government policy on school readiness and deferral.
What Is the Compulsory School Age in England?
In England, a child reaches compulsory school age at the beginning of the school term following their fifth birthday. In practice, this means:
| Child's 5th Birthday | Compulsory School Age From |
|---|---|
| 1 September – 31 December | 1 January (start of spring term) |
| 1 January – 31 March | 1 April (start of summer term) |
| 1 April – 31 August | 1 September (start of following autumn term) |
This means a child born on 1 September (the very start of the academic year) reaches compulsory school age on 1 September the following year — aged 5. A child born on 31 August (the very last day of the academic year) also reaches compulsory school age on 1 September of the following year — also aged 5. There is no child in England who is legally required to be in full-time education before the age of 5.
When Do Children Actually Start School — The Reception Year
While compulsory school age is 5, the vast majority of children in England begin full-time education at age 4, in the Reception year — the first year of primary school and the first year of Key Stage 1. This is because:
- Most state primary schools offer Reception places starting in September of the academic year in which a child turns 5
- Free childcare entitlements (15 or 30 hours) apply to 3- and 4-year-olds, creating a financial incentive to transition from nursery to school at 4
- The social and educational experience of Reception is widely valued by families and recommended by early years professionals
In short: children do not have to start school until they are 5, but nearly all start at 4 because the system is built around a September cohort entry into Reception.
Even though your child does not legally have to be in school until they are 5, the Reception year application deadline is typically 15 January for a September start — regardless of whether your child turns 5 before or after September. Missing this deadline significantly reduces your chances of securing a place at your preferred school. Apply on time, even if you are considering deferral.
How to Apply for a Reception Place
Reception places are allocated through the local authority coordinated admissions process. Here is how it works:
- September of the year before entry: Schools publish their admission arrangements for the following year; many hold open evenings
- October–January: The application window is open — apply online through your local authority's admissions portal, listing up to 3–6 schools in preference order (the number varies by LA)
- 15 January: The national deadline for on-time applications
- 16 April: National Offer Day — all on-time applicants are notified of their allocated school on the same day
- April onwards: Parents accept or decline the offer; waiting lists are formed; appeals may be lodged
To find out which schools you can realistically apply for based on your home address, use our Catchment Area Checker.
Can I Defer My Child's School Entry?
Yes — parents have a legal right to defer a child's entry into Reception until later in the school year, as long as this is not beyond the point at which the child reaches compulsory school age or beyond the beginning of the final term of the school year. In practice this means:
- You apply for a Reception place in the normal round
- Once a place is offered, you tell the school you wish to defer entry — typically to January (spring term) or April (summer term)
- The school must hold the place for your child until the deferred start date
- The child joins Reception mid-year, not Year 1 — they do not skip the Reception year
Deferral is often chosen by parents of children born in the summer months (June, July, August) who feel their child is not quite ready for the structure of school at 4. It is also used by families whose child has a medical or developmental need that makes a delayed start advisable.
Part-Time Attendance in Reception
Parents also have the right to request that their child attends school part-time during the Reception year, until the child reaches compulsory school age. Schools must comply with this request, though they may encourage full-time attendance. A child attending part-time in Reception still holds a full Reception place; the school cannot allocate it to another child.
Deferral and part-time attendance are legal rights, not favours schools grant at their discretion. If a school tries to refuse a deferral request or tells you that you cannot hold a Reception place while attending part-time, they are not following the law. If you encounter resistance, refer to the School Admissions Code (2022), paragraph 2.16, and if necessary contact your local authority's admissions team.
The Summer-Born Children Issue
Children born between 1 April and 31 August are known as summer-born children. They are the youngest in their academic year group, starting Reception at age 4 — sometimes only weeks after their fourth birthday. There is significant research evidence that summer-born children are, on average, at a developmental disadvantage compared with autumn-born peers throughout their school careers, with effects visible in attainment, SEND identification rates, and even university admission rates.
Delayed Entry for Summer-Born Children: Starting Reception at Age 5
Since 2019, parents of summer-born children have had a strengthened right to request that their child starts Reception at age 5 — entering the school year with children who are technically a year younger, but at the right developmental stage. This is different from deferral: the child misses the Reception year that was offered for their chronological cohort and instead starts Reception the following September with the next cohort.
This is sometimes called "delayed school entry" or "starting school a year late." It requires a formal request to the local authority and the school's admission authority, which must consider it carefully and give reasons if they refuse. The request is not automatically granted, and practice varies across England.
Arguments For Delayed Entry for Summer-Born Children
- Aligns school start with developmental readiness rather than calendar date
- Reduces the "relative age effect" — the well-documented disadvantage of being the youngest in a cohort
- Particularly relevant for children with SEND, developmental delays, or premature birth
- Supported by academic research and endorsed by many early years specialists
Arguments Against (and Practical Complications)
- The child will sit GCSEs a year later than their chronological peers
- Admission to secondary school may be complicated if the secondary school does not agree to maintain the out-of-cohort placement
- Some local authorities still resist requests despite the strengthened guidance
- Not all primary schools are experienced in supporting a child who is out of their normal year group
What If I Want to Educate My Child at Home?
If you do not wish your child to attend school at all, you have the right to electively home educate in England. This does not require permission from the local authority or a school — it is your legal right as a parent. Your child must receive a full-time education suitable to their age, ability, and aptitude, but there is no requirement to follow the National Curriculum or to register with any authority (though local authorities may make informal enquiries). For more on home education in England, see our dedicated guide to Elective Home Education: The Legal Requirements for Homeschooling in England.
Frequently Asked Questions
Does my child have to start school at 4?
No. The legal compulsory school age in England is 5, not 4. You have the right to defer your child's Reception entry until the term after their fifth birthday. You can also educate your child at home if you choose. However, applying for a Reception place remains advisable even if you plan to defer, as this secures a place for your child at your preferred school.
What if my child's fifth birthday is in August?
Your child will be the youngest in their school year. You have the right to apply for a Reception place in the normal round, then defer entry to the spring or summer term of the Reception year (by which point your child will be 5). Alternatively, you can apply for delayed entry, requesting that your summer-born child starts Reception the following September with the year group below. This requires a formal request to the admission authority and is not automatic.
Can I send my child to school before they are 4?
No child can attend a state primary school before the beginning of the academic year in which they turn 5, i.e. they must have turned 4 by 31 August of the year they enter Reception. Nursery provision is available from age 3 (and in some cases from age 2 for disadvantaged families), but this is separate from the school Reception year.
What is the difference between nursery and Reception?
Nursery (or pre-school) typically covers ages 3–4 and is part of the Early Years Foundation Stage (EYFS) but separate from primary school. It is often provided at private nurseries, children's centres, or nursery classes attached to primary schools. Reception is the first year of primary school proper — it is part of Key Stage 1 and leads directly into Year 1. Both follow the EYFS framework, but Reception is a compulsory school year with a formal admission process. To find primary schools in your area with attached nursery provision, use our School Finder Wizard.
If I defer, will my child go straight to Year 1?
No — if you defer within the same school year, your child joins Reception later in the year and completes Reception before moving to Year 1 in September. If you are requesting delayed entry (starting Reception the following year), your child enters Reception with the next cohort and progresses through each year group in order from there.
