Historical clue formulations

• It's a surprise, of course! — 2026-02-21
• Classroom surprise — 2024-04-21
• Questions of surprise? — 2021-10-23
• Classroom surprise [15][16] — 2017-09-20
• Classroom groan elicitor — 2009-06-06
• Student's worry — 2004-04-21
• It's given without warning — 2003-10-24
• Student's surprise — 2000-01-15
• It may make a pupil shrink — 1998-02-07