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Grade Boundary

OCR · AS

Chemistry grade boundaries

Every OCR AS Chemistry boundary set we hold —14 awards across 7 series. Marks are raw marks for the whole subject, and every table links to the document it came from.

Grade A boundary over time

Shown as a percentage of the maximum mark, because the maximum changes when a board reforms a specification and raw marks stop being comparable.

  1. June 202678.6%110
  2. June 202580.7%113
  3. June 202483.6%117
  4. June 202377.1%108
  5. June 202275.7%106
  6. June 201976.4%107
  7. June 201877.1%108
1400110A96B82C68D55E
Every boundary at its true height on the 140-mark scale.

Turn a mark into a grade

This is the total for the whole subject, not one paper. Working from paper marks? Use the paper calculator below.

of 140

Enter a mark to place it on the scale.

June 2026Latest

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AwardCodeMaxABCDEU
ChemistryH03214011079966982596849553900
Chemistry (Salters)H03314010172866172515841443100

June 2025

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AwardCodeMaxABCDEU
ChemistryH03214011381997185617251594200
Chemistry (Salters)H0331409467795665465136372600

June 2024

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AwardCodeMaxABCDEU
ChemistryH032140117841047491657856654600
Chemistry (Salters)H0331409366795665465136382700

June 2023

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AwardCodeMaxABCDEU
ChemistryH03214010877936678566345493500
Chemistry (Salters)H0331409165775563454935362600

June 2022

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AwardCodeMaxABCDEU
ChemistryH03214010676896472515539382700
Chemistry (Salters)H0331409064745358414230271900

June 2019

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AwardCodeMaxABCDEU
ChemistryH03214010776946781586849564000
Chemistry (Salters)H0331409165785665465338412900

June 2018

Open June 2018 with calculators →
AwardCodeMaxABCDEU
ChemistryH03214010877946780576647523700
Chemistry (Salters)H0331409366795665465237392800