1 No judge shall have taught any student within the past two years.
2 Contestants must disclose all past teacher relationships.
3 Contestants must disclose any previous contact with any of the judges.
4 No more than four students shall be admitted of the same nationality.
5 No more than 60 percent of contestants shall be of the same sex.
6 A judge who recognises a contestant from a previous competition must withdraw from the round.