Buckinghamshire 11+ Data Platform
Know your child's chances before the test.
9 years of Buckinghamshire Secondary Transfer Test results — 71,000+ individual scores, 544 feeder school pass rates, catchment distances, and selection review outcomes. All from official TBGS consortium data.
Common questions
Every question has a data-backed answer.
Live data
A sample of what's inside.
A-Level Heatmap
A*/A % by school and subject
| School | Maths | Chemis. | Biology | Econom. | Physics | Psycho. |
|---|---|---|---|---|---|---|
| Aylesbury GS | 58% | 42% | 31% | 64% | 44% | 14% |
| Aylesbury HS | 53% | 41% | 51% | 36% | 31% | 44% |
| Beaconsfield HS | 56% | 51% | 53% | 57% | 57% | 34% |
| Burnham GS | 52% | 44% | 38% | 41% | 39% | 19% |
| Chesham GS | 62% | 63% | 66% | 55% | 57% | 48% |
| Dr Challoner's GS | 76% | 55% | 68% | 67% | 67% | — |
Catchment Distances
Aylesbury Grammar — furthest offered place (miles)
Find Your School
Search 544 feeder + 13 grammar schools
Popular
Selection Review Success by Score
Scored below 121? See your chances of qualifying through review.
Top Feeder Schools by Pass Rate
544 schools ranked · 2025 data
| # | School | Pass Rate | Avg Score |
|---|---|---|---|
| 1 | Reddiford School (Pinner)Private | 100.0% | 141.2 |
| 2 | Brooklands Farm Primary School (Milton Keynes)State | 100.0% | 140.0 |
| 3 | Greenwood Primary School (Northolt)State | 100.0% | 138.8 |
| 4 | Cannon Lane Primary School (Pinner)State | 100.0% | 137.1 |
| 5 | St Bernards Prep School (Slough)Private | 100.0% | 136.7 |
What's covered
Grammar & feeder performance data analysed like never before.
Feeder School Rankings
Which primary schools send the most children to grammar school? See pass rates, year-on-year trends, and score distributions for 544 feeder schools — state and private.
Explore →Grammar School Profiles
Attainment 8, Progress 8, A-Level subject breakdowns, grade distributions, admissions demand, and historical catchment distances for every Buckinghamshire grammar.
Explore →Interactive Maps
Enter your postcode to see distance lines to every grammar school. Catchment rings show the furthest offered place each year — so you know where you stand.
Explore →Selection Review Outcomes
If your child scores below the qualifying mark, selection review is the next step. We track success rates by score across 8 years so you can see the odds.
Explore →Demographic Breakdowns
Pass rates split by gender, ethnicity, and birth month. Are summer-born children disadvantaged? How do boys and girls compare? The data answers it.
Explore →Individual Student Scores
Every STT score from every student, plotted across the full range. Expand any year at any school to see where each child landed relative to the pass mark.
Explore →Built on official data
Every figure comes from published sources: TBGS Consortium result publications, DfE School Performance Tables, GIAS school records, Ofsted ratings, and Buckinghamshire Council allocation profiles. ElevenReady is an independent project — not affiliated with any school, council, or testing body.
Start Exploring →