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Grade Boundary Calculator

Enter your raw mark and we'll return the grade you'd have achieved under the boundaries for the exam series you choose. Currently covers 16 subject combinations across 3 exam boards (AQA, Edexcel, and OCR), spanning the 2022-2025 series so you can see how boundaries move year to year. Data is sourced directly from each board's own published boundary tables. WJEC and additional boards/years are pending data import. It's free to use and there's no login required.

Citable trend · AQA GCSE Combined Science (Trilogy), Higher tier, top grade (9-9)

The raw-mark threshold for the top grade (9-9) has moved from 276 marks in 2022 to 335 marks in 2024 (out of 420), a swing of +59 marks in 2 years.

2022: 276 · 2023: 291 · 2024: 335 out of 420. See the methodology page for full sourcing.

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How this calculator works

Grade boundaries are the raw-mark thresholds each exam board sets after every exam session. They're not known in advance — they're set based on the difficulty of the papers and the performance of the cohort. This tool uses actual published boundaries from 2022 to 2025 so your result is a realistic prediction, not a guess, and you can see how boundaries for the same subject have shifted over time. Full sourcing and methodology are documented on the methodology page.

Why your real boundaries may differ

  • Boundaries typically move year-on-year as paper difficulty changes, sometimes by a wide margin.
  • Different papers within a subject (e.g. Paper 1 vs Paper 2) may have been rebalanced.
  • Foundation and Higher tier GCSEs have completely separate boundaries.
  • Some A-Level subjects with optional modules use UMS conversion before boundaries apply.

Primary sources

The boundary data in this calculator is taken directly from:

For the full data-collection method, aggregation rules, and per-year source documents, see the methodology page.

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