Why do Computer Science grade boundaries change every year?

Because they're set after the papers are marked, once examiners can see how hard students found that year's exam. If a paper was harder, the boundary drops so the same standard of work still earns the same grade. That's why a boundary from a previous year is never a safe prediction for this year.

Are these the marks for the whole subject or for one paper?

The whole subject. AQA also publishes "notional" per-paper boundaries, but those are illustrative only — your grade is decided by your total subject mark against these subject-level boundaries, so those are the numbers we show.

Which Computer Science boundary applies to me?

The one for your specific option or route (shown on your exam paper). AQA publishes programming-language options (C#, Java, Python, VB.Net and more), each with its own boundaries, so there is no single Computer Science number — match your option in AQA's file.

AQA A-level Computer Science grade boundaries

Data source: AQA A-level grade boundaries (June 2025) · 2023–2025 data · checked July 2026How we verify →

The raw marks needed for each grade in AQA A-level Computer Science (7517), straight from AQA's official tables. Boundaries are set after every paper is marked, so a lower boundary usually means the paper was harder that year — not that the grade got easier. Because there's no single boundary, we show one worked option below rather than a full year-by-year table.

Published per programming-language option — no single 'A-level Computer Science' boundary.

Reform watch:England's 2025 Curriculum & Assessment Review doesn't change GCSE or A-level content until reformed specs are first taught (national curriculum September 2028; updated GCSEs from 2029). Your 2026–2028 exams use the current specification. What's changing →

There is no single "Computer Science" boundary. AQA publishes Computer Science (7517) as programming-language options (C#, Java, Python, VB.Net and more). Each has slightly different boundaries, so the top grade lands anywhere in the range roughly 300–300 out of 375 depending on the option. Any site quoting one "Computer Science" boundary is wrong — you need the boundaries for your option, printed on your exam paper and your statement of results.

Worked example: 7517A · C# (2025)

One option, to show the shape. Check your own option against AQA's file below.

Grade	Raw mark
A*	300
A	245
B	201
C	157
D	113
E	69

How to read these. A boundary is the minimum raw mark for that grade — score it or above and you get the grade. They're a whole-subject total, not a per-paper pass mark, and they change every year. Never treat a past year's boundary as this year's target. Why A-level grade boundaries move →

Where these numbers come from

2025: AQA A-level grade boundaries, June 2025 (Version 1.0, 14 August 2025) · official PDF
2024: AQA A-level grade boundaries, June 2024 (June 2024 series)
2023: AQA A-level grade boundaries, June 2023 (June 2023 series) · official PDF
Earlier series and other qualifications are on AQA's grade-boundaries pages. We add boards and years as we verify each against its official file.

Frequently asked questions

See all A-level grade boundaries, or read how A-level grades work.