Undressing completely from the beginning?

Some folks here, have already posted that they have been asked to undress completely from the start of the exam. I would be comfortable with that. But did any one have to get naked from the start to end when young or teen and a parent was in the room?

That might have been weird or interesting. The last time I had an exam as a teenager I was 14. My dad was in the room and saw me naked. It wasn't that first time he saw me like that, or no big deal but I did have underwear on for most of the exam.

Never had to undress at the very start, but I did sometimes end up naked by the end of the examination