Bucks 11+ score percentile
For 2025 entry, 3,044 of the 7,736 children tested (39.3%) reached the Bucks 11+ qualifying score of 121.
Bucks 11+
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- 121 or more
- Under 121
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Questions people ask
What percentage of children pass the Bucks 11+?
For 2025 entry, 3,044 of the 7,736 children tested (39.3%) scored 121 or more, and 328 more qualified after a selection review. For 2023 entry it was 3,593 of 9,783 (36.7%).
What is the average Bucks 11+ score?
The middle child scored 114 for 2025 entry and 113 for 2023 entry. One child in ten scored 139 or more for 2025 entry.
Is a higher score than 121 better?
Not for places. Buckinghamshire's grammar schools do not rank qualified children by score, so 121 and 140 are treated the same. A higher score does rank higher among the children who sat, which is what this tool shows.
How is the Bucks score worked out?
The Secondary Transfer Test is age-standardised, then weighted 50% verbal skills, 25% maths and 25% non-verbal skills. We have found no official table that turns raw marks into Bucks scores, so this tool works from the score itself.
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How we work this out
What it does
See how a Buckinghamshire Secondary Transfer Test score ranked among every child who sat the test, from the published score files.
The Buckinghamshire Secondary Transfer Test score (STTS), which is age-standardised and weighted 50% verbal, 25% maths and 25% non-verbal. We compare with every score in the birth-month files The Buckinghamshire Grammar Schools published for 2023, 2024 and 2025 entry: 9,783, 9,685 and 7,737 children.
Method
- We count how many children in the chosen year's file scored lower than your score, and how many scored exactly the same.
- The share who scored lower is that count divided by all the children in the file. For 121 in the 2023-entry file: 6,190 of 9,783 scored lower (63.27%) and 171 scored exactly 121, so 121 was in the top 37%.
- Because many children share each score, the rank is a small range, from the share below to the share at or below. We lead with the share at or above, as 'the top N%'.
- 121 or more qualifies for every Bucks grammar school. That is a separate yes or no, not a ranking.
Published figures
Bucks scores by band, 2023 to 2025 entry
Counted from the published birth-month score files. Each year lists every child who sat.
| Score | 2025 entry | 2024 entry | 2023 entry |
|---|---|---|---|
| Under 100 | 2,266 (29.3%) | 2,485 (25.7%) | 2,629 (26.9%) |
| 100 to 109 | 1,130 (14.6%) | 1,625 (16.8%) | 1,593 (16.3%) |
| 110 to 115 | 664 (8.6%) | 998 (10.3%) | 1,084 (11.1%) |
| 116 to 120 | 631 (8.2%) | 911 (9.4%) | 884 (9%) |
| 121 to 129 | 1,304 (16.9%) | 1,447 (14.9%) | 1,417 (14.5%) |
| 130 to 139 | 1,005 (13%) | 1,202 (12.4%) | 1,181 (12.1%) |
| 140 and over | 737 (9.5%) | 1,017 (10.5%) | 995 (10.2%) |
| All children | 7,737 | 9,685 | 9,783 |