greg: setting a good quiz?
Well, if you think this applies to me, then here's my system.
First find your theme, or decide on a connection (initial letters of answer, final letter of answer, all containing a double letter [or a specific double letter])
Next come up with about 25 answers, and try to write suitable questions for them (This will usually knock you down to my standard of 20 once you find that a good example of your theme has no suitable alternate definition)
Double check references for any you feel require it
Do a suiable layout. Mine is a table with 3 columns, Number,Question,answer. To re-use a quiz, I can re-print it, but for different style functions I can delete the answer column, and photocopy as hand-outs.
Despite the varying responses to these quizzes, I find that my regulars at the local will have a top score of 17-20 (85%+) whilst most get a score of 14-17. If any one (or team) fail to get 10 then I have made it too hard, and if their is a multiple tie for 20 then it's too easy

Nigel