Research edition · Comparison · SPGS · Westminster
How do SPGS and Westminster compare on A-level grades at A*?
Comparison · A-level grades at A* · 2016, 2018–2019, 2025. Edition of 28 Sep 2026.
The answer · Holds up
Over the 4 years we can compare (2016, 2018, 2019, 2025), SPGS is ahead by a typical 9.9 points; 3 of 3 year ranges agree.
The figures
- SPGS
- Westminster
Each school against the same scale and years.
Exam eras: 2016; 2017–19; 2020–21 (grades set by schools); 2022 (return to exams); 2023–25. The rule beneath the axis marks exam conditions, not schools.
A break in a line means a year has no comparable figure; nothing is estimated. A hollow marker is a provisional figure the school may revise. The figures behind the chart are listed below.
| Year | SPGS (%) | Westminster (%) | Gap (points) |
|---|---|---|---|
| 2016 | 60 | 49 | 11 |
| 2018 | 58.7 | 48 | 10.7 |
| 2019 | 52.1 | 47 | 5.1 |
| 2025 | 66.8 | 57.8 | 9 |
Figures to two decimal places at most. A figure known only within the school’s rounding is shown as a range, never as its lower end.
Read this with the answer
- A-level-only series. IB, Pre-U, mixed qualifications and school-defined combined definitions are excluded. CAG/TAG years 2020–21 are excluded by default; unresolved competing values are retained in the evidence record but omitted here.
- Published results describe different groups of pupils, chosen in different ways. They can’t show the effect of attending a school, or what one pupil would achieve.
- Only the years both schools can be compared on are used: 2016, 2018, 2019 and 2025. A missing or excluded year is not a zero result.
- Fewer than five shared years, which is too few for the period check: it needs five.
- These figures carry the record’s existing source checks, which are kept apart from background links. This edition didn’t reopen every original publication.
- Historical results: the latest shared year is 2025. They can’t show 2026 results.
4 of the 9 recorded figures behind this comparison have an exact source check for that field and year; 5 are recorded or calculated figures with their support set out in Record details. This is not a fresh check of every source.
With research access
What the study means, and what to ask next
Research access adds what the comparison shows once it is read year by year, whether the answer holds when the period changes, and the questions to take to each school. It is added to your briefing with its sources, dates and qualifications.
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Where the figures come from
Each record gives the full definition, the documents it came from and what we checked.
St Paul’s Girls’ School · 2016 · Published examination results · 2016 · A-level
Checked against the original: A* and A*–A.
St Paul’s Girls’ School · 2016 · A-level 2016 · additional cumulative grade percentages · 2016 · A-level · A*–E
This figure hasn’t been fully checked against the original yet.
Westminster School · 2016 · A-level results · 2016
This figure hasn’t been fully checked against the original yet.
St Paul’s Girls’ School · 2018 · A-level · published record · 2018 · A-level
Checked against the original: 12 figures, including A* count, A* and A*–A.
Westminster School · 2018 · A-level results · 2018
Publications differ on A*–A and A*–B.
St Paul’s Girls’ School · 2019 · Published examination results · 2019 · A-level
This figure hasn’t been fully checked against the original yet.
Westminster School · 2019 · A-level results · 2019
This figure hasn’t been fully checked against the original yet.
St Paul’s Girls’ School · 2025 · Published examination results · 2025 · A-level
Checked against the original: A*, A*–A, A*–B and entries.
Westminster School · 2025 · A-level results · 2025
Checked against the original: 12 figures, including A* count, A* and A*–A. Not yet checked: 5 figures, including candidates, pupils with 4 A*s and pupils with 5 A*s.