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that's great but i have a small question for those who have seen the movie at the beginning of poa harry was using magic to learn a lighting spell but when he blew up his aunt he was in trouble i thought harry could not use magic at all at home is the a mistake in the move? or am i wrong? someone please answer this question because i need to know
He was doing his homework therefore I think it was allowed.
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It's the same thing in Chamber of Secrets, they're not allowed to use magic outside of school, yet Hermione fixes Harry's glasses by magic in Diagon Alley.
Jo Rowling explained this one, she said they can use magic in the wizarding community. The no underage wizardry law is in place for muggle protection and to stop them from being revealed to the muggle community. Which is why it was also ok for Harry to practice magic in his room as no muggle witnessed it therefore he did not risk the exposure of the wizarding kind.