Underage magic enforcement

[JoAnna]

No: HPFGUIDX 94709

Carol:
<<<If, as others have speculated, the underage magic is detected by
identifying the wand, then a child under eleven would be using 
someone else's wand or no wand at all, and the MoM could not 
identify the child who cast the spell. I also think (hope) that it 
would be the parents' responsibility to monitor their young 
children's behavior. Otherwise, the WW would be a police state in 
which the authorities take over the parents' role. It would be like 
having the local sheriff's deputy arresting your child if he swears 
at his grandmother in public. (I don't want to get into whether we 
really have such a police state in the RW, which tends to think the 
parents are at fault!)>>>

As I was reading your post, Carol, something else occurred to me.  
Why didn't Harry get a warning from the MoM during the Quidditch 
World Cup, when Barty Crouch Jr. used Harry's wand to conjure the 
Dark Mark?  If the MoM monitors wands, you'd think that would be the 
case.

However, one explanation is that the Ministry didn't send a warning 
considering that the Minister of Magic and tons of MoM officials 
were already present at the cup (and quickly determined that Harry 
hadn't conjured the Dark Mark, just his wand).  Or, there were so 
many wizards at the Mark, his magic wasn't detected (I believe 
Hermione or Ron used Lumos too, and neither got a warning).  Or, 
since it was a life threatening situation (Death Eaters running 
rampant), they didn't bother to send any warnings.

I guess I answered my own question, didn't I?  :D

- JoAnna