11+ age-standardised score calculator
Turn a raw mock score into an estimated age-standardised score (SAS) and see how it compares to typical grammar-school thresholds. Adjusts for your child’s age, the way the exam boards do.
The percentage your child scored on the practice paper or mock.
Younger (summer-born) children receive a larger age allowance.
Estimated standardised score
115
Likely pass rangeAround the qualifying mark many grammars use — keep building consistency.
This is an indicative estimate for guidance only. Exam boards (GL, CEM, CSSE and local authorities) use confidential national norm tables, so the official SAS your child receives may differ. For a more accurate, continuously tracked standardised score, take the free diagnostic.
How to use it
- 1Enter the raw score. Move the slider to the percentage your child scored on a mock or practice paper.
- 2Select month of birth. Choose the birth month so the age allowance can be applied (Sep–Aug school year).
- 3Read the estimate. See the estimated standardised score and which grammar-school band it falls in.
Why age standardisation matters
A summer-born child can be almost a year younger than an autumn-born classmate sitting the same test. Age standardisation levels the field by comparing each child to others of the same age, which is why grammar schools rank on SAS rather than raw marks. Learn more in our topic lessons and GL vs CEM guide.
FAQs
What is an age-standardised score (SAS)?+
A SAS converts a raw mark into a score adjusted for a child’s exact age, then places it on a scale centred on 100 (the national average) with a standard deviation of 15. It lets you compare children fairly regardless of when in the school year they were born.
What SAS do you need to pass the 11+?+
It varies by area and school. Many grammars use a qualifying mark around 111, while super-selectives effectively require 120+. Always check the specific school’s arrangements.
How accurate is this calculator?+
It is an indicative estimate. Exam boards use confidential national norm tables, so the official SAS can differ. Use it for guidance and tracking trends, not as a guarantee.
See exactly where your child stands — free.
Take the 15-minute diagnostic for an instant age-standardised score and a clear plan. No card, no sign-up.