Year by year
2022 grades were the assessed-grades peak; the reset since is visible in the shape of each year.
Board by board · 2025
Differences between boards reflect who enters each board as much as any difference in standard. The data shows the divergence; it does not explain it.
National reference: 7+ 46.1% · 161,948 entries
Tiered subject — students sit Foundation or Higher; this figure blends both (boards don’t publish a per-tier split).
Chemistry is also offered at A-level: see the A-level distribution →
Grade distributions reflect who enters a subject as much as the exam itself, so nothing on this page is a difficulty ranking. Figures are published cumulative percentages from JCQ and the awarding bodies; per-grade shares are derived by subtracting adjacent bands. How the data is sourced and worked out.