Age standardisation adjusts your child's raw performance for how old they were on the day of the test, so a summer-born child is not competing against an older child's extra months. It is unusual, and it is one of the fairest features of this test.
It is also routinely misunderstood, in both directions.
Why this is unusual
Age standardisation is not used in Key Stage 2 SATs, and it is not used at GCSE. Most assessment a child meets takes no account of birth month at all.
The West Midlands partnership does. the partnership entrance test page confirms that results are standardised for age, and they are reported around a median of 200 across all nineteen schools.
How it works
The logic is straightforward. Within a single school year, a child born in September is nearly a full year older than a child born the following August. At eleven, that is a meaningful share of a lifetime.
So the standardisation adjusts for it. A younger child's raw performance is weighted upward relative to an older child's, and the published score you receive already has that adjustment built in.
| Born | Relative age in the year group | Effect of standardisation |
|---|---|---|
| September | Oldest | No uplift |
| Spring | Middle | Modest uplift |
| July and August | Youngest | Largest uplift |
The exact algorithm belongs to the assessment provider and is not published, so nobody can tell you precisely how many marks your child received. In practice it is several marks rather than a transformation, and anyone quoting you an exact figure is guessing.
The assumption underneath it is not quite right
Here I would push back a little on the thinking behind the adjustment, because it matters for how you prepare.
The premise is that an older child has more life experience and is therefore further along. In my experience that is not reliably true. What actually predicts where a child is in Year 5 is development and exposure, not birth month.
I have taught summer-born children who had early teaching at home or early tutoring, and they were well ahead regardless of when they were born. I have also taught September-born children with no exposure to any of this material, and they started behind a summer-born child who had it. Exposure beats birth month, repeatedly.
What this means for you
Two practical conclusions, pulling in opposite directions.
If your child is summer born, do not write the year off. The adjustment is real, it is applied automatically, and you do not have to request it. A summer-born child with a good preparation year is in a genuinely competitive position.
And do not treat it as a cushion. It is several marks, not a transformation, and it will not close a gap created by not preparing. The child who benefits most from standardisation is the one who did the daily work as well.
See our guide to how the standardised score works.
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Exposure matters more than the month they were born
Standardisation is quite unusual. It is not used in SATs at Key Stage 2, or for secondary, or at GCSE. It takes into account the month your child is born in, because some are born in September and some in late August, and the thinking is that the later they are born within that year, the earlier a stage of learning development they are at, whereas a child born in September has more world and life experience and is therefore further along.
Now, I actually feel that is untrue, given the nature of development. A lot of the students I have taught had early onset learning, early tutoring or home teaching from a parent, and they were advanced regardless of the month they were born. And I have had students with zero exposure to any of this material, born in September, who were behind a student born in the summer. So it is purely down to development and exposure early on.
Standardisation is genuinely advantageous for those born later in the year, because they will get extra marks for it. But it is only several marks, and the exact algorithm used to standardise is something unique to the assessment provider. Do not plan around it as though it were a cushion.
Mushtaque Ahmed, Founder of GrammarPath and Bright Mentors
Frequently asked questions
How does age standardisation work in the West Midlands 11+?
Results are adjusted for how old the child was on the day of the test, so that a younger child is not disadvantaged against an older one in the same year group. Scores are then reported around a median of 200 across all 19 partnership schools, with the adjustment already built in.
Do summer-born children get extra marks in the 11+?
Effectively yes. Age standardisation weights a younger child's performance upward relative to an older child's, with the largest uplift for those born in July and August. The exact algorithm belongs to the assessment provider and is not published, but in practice it amounts to several marks rather than a transformation.
Is age standardisation used in SATs or GCSEs?
No. It is unusual to the 11+ and similar selective tests. Key Stage 2 SATs and GCSE take no account of birth month, which is why many parents meet the concept for the first time during the 11+ process.
Do I need to apply for age standardisation?
No. It is applied automatically to every candidate based on date of birth, and the score you receive already includes it. There is no form and no request to make.
Does being summer born actually hold a child back?
Less than the assumption behind the adjustment suggests. What predicts where a child is in Year 5 is development and exposure rather than birth month: a summer-born child with early teaching is often well ahead of a September-born child who has met none of this material. Preparation matters more than the date.