Have you ever told the examiners what you thought of them?

There are always some students who try to succeed without too much swotting – whether by smuggling mobile phones and crib sheets into the exam room, or simply by peeking at someone else's answers. But what about those who do the opposite and ruin their chances by scribbling obscenities? The number of students including "inappropriate, offensive or obscene material" in examination papers or coursework has more than doubled since 2007, according to a report on last summer's GCSE and A-level exams by Ofqual, the government regulator. Examples ranged from racist remarks to lewd drawings and comments about the examiners. Many of us may have been tempted to tell the examiners what we think of them, but have you ever done so?