What does this tool do?
Percentile rank compares one score with the rest of a group rather than with the total points available. It is useful for standardised tests, class rankings and any result reported relative to peers.
The Formula
Percentile rank = (Scores below + 0.5 × Scores equal) ÷ Total scores × 100Frequently Asked Questions
Is percentile rank the same as percent correct?
No. Percent correct measures how many questions were answered correctly, while percentile rank measures how a score compares with the other scores in the group.
Why are tied scores given half credit?
A tied score is neither entirely above nor entirely below the result, so the midpoint convention splits ties evenly. This keeps the rank stable when several students share the same score.