Possible Duplicate:
How does the Hogwarts Headmaster know whom to invite to school?

In Harry Potter universe, not everyone can do magic. Only magic users can do that. But, how to identify a newly borned child that he/she is magic user or not?

In Star Wars universe, we've midi-chlorians existence using which we can identify someone as force user. I was looking for similar things without any luck.

How does Wizard and Witchcraft universities send invitation letters to 11 year kids?

  • 1
    @Izkata - duh. I should have remembered - I answered that one with the same source :( Aug 19, 2012 at 14:21
  • 1
    I've also voted to close.
    – user931
    Aug 19, 2012 at 14:22

1 Answer 1


There is a special quill that Minerva McGonagall had that wrote the names of all magic users to invite upon birth.

In Hogwarts there's a magical quill which detects the birth of a magical child, and writes his or her name down in a large parchment book. Every year Professor McGonagall checks the book, and sends owls to the people who are turning 11. (JKR chat, Scholastic.com, 2/3/2000)

Something similar must also exist at the Ministry to start monitoring for Underage Magic violations, but there's no canon mention of the details.


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