June 2026 data · Daily challenge
Which boundary
was higher?
Ten rounds. Pick which subject had the higher percentage for a 9 or A*.
Challenge 2026-09-21
Everyone using this date, qualification and mode gets the same challenge. The June 2026 question set is frozen for this version.
A higher threshold wins the round. It says nothing about which subject is harder. No account, leaderboard or stored student scores.
Try your own percentage
Enter a percentage and see which published grade it crosses in every subject.
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