judging ethics

[ches]

When I ran an (Amtgard)Interkingdom A&S I placed a rule on the judges.  
The rule was that they would not be allowed to judge if their significant 
other were entering in any of the events.  It has always been my rule 
that no one running or judging an event may be allowed IF their 
significant other were to participate in the event. It is just my 
personal code of ethics and not an official thing.  I would like to 
know if the S.C.A. has similar rules for judging and or autocrating 
competitions that are official.  Any unofficial?  How about judging your 
own student/squire/cadett/page, would you condsider it an ethical problem 
to judge their work versus a rival's s/s/c/p?

Ciao
Ches