Across 2,599 rated papers in 23 subjects. Difficulty is scored per paper against its own component history — how that works.
All papers across all subjects
Total papers indexed per qualification
Every score is compared against the tightest reference class with enough data behind it.
Four or more recorded sittings of this exact component. The strongest comparison.
Too few sittings of the component, so the comparison widens. Directionally useful.
Not enough history for a comparison. Treat these as a rough hint.
Average mark needed for an A, by subject. Not a difficulty ranking — a low average mostly reflects how a subject’s papers are built, which is why difficulty is scored per paper against its own history instead.
Stacked count of easy / medium / hard papers each year