Hagrid/Expelled student's Magic (was Petunia, magic!?)

[chappysmom]

No: HPFGUIDX 67668

--- In HPforGrownups at yahoogroups.com, "Susan Smith" 
<atroposgryffin at y...> wrote:
> 3.  Hagrid!  Afterall, once he was found innocent(CoS)JKR said in 
> many interviews that he is now allowed to use magic openly.  But, 
> since he was expelled midway through Hogwarts, he may only know 
> rudimentary spells. (ie growth spell on pumpkins, etc)  But, we 
have > never really seen Hagrid do anything above a 2nd or 3rd year 
Hogwarts > level.  Maybe he needs further instruction in order 
to "learn" what > exactly he and his umbrella can do.

-----------------You know, I've always wondered about this--I know a 
wand of an expelled student is broken, and that person is then 
officially forbidden to use magic, but two questions: (1) If they've 
grown up doing magic--even without a wand--how can they just stop 
cold-turkey? and (2) If they've been wrongfully expelled as Hagrid 
was--is there some sort of equivalency course they can take to catch 
up (like an American GED for a high-school equivalency degree). Is 
Hagrid forever stuck at the level he was at when he was expelled, 
and can he never buy himself a new wand?

--Deb