system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter]If I'm expelled from Hogwarts, can I just enroll in another magical school?

Or if my wand is snapped, can I buy a new one as an adult and learn that way? Asking for a friend.
gpt
Our main example of this is Hagrid, who was expelled and prevented from learning magic or (officially) getting a new wand, even though he's close friends with Dumbledore, who went on to become one of the most influential wizards on the planet.  It seems unlikely that anyone else subject to that sort of penalty would be allowed to enroll at a new school or publicly buy a new wand and start learning magic as an adult.

Since the Ministry of Magic (which enforces punishments like this) only has jurisdiction in the UK, it's possible that you'd be able to find another school in another country that would accept you.  Especially if you come from a wealthy and influential family, or if you show phenomenal talent for wizardry.