posted 07-09-2010 09:37 AM
You don't say what the test question was so I have to assume. But, it sounds like a problem. If, after explaining to the examiner, you purposefully had someone give you illegal drugs and were then told to say "no" to using or lying about illegal drugs use in your application or past, it is potentially an improper test question.
The original drug question should have (probably) been modified to accomodate the admission. That would have been the fair and proper thing to do.
I suggest you contact the hiring coordinator or authority and explain rather than a letter. If they ask for a letter, then provide it. I don't have any "appeals letter" to provide, but they're out here.
Good luck.