Summer School

[Steve Vander Ark]

No: HPFGUIDX 15523

JKR has stated that Hogwarts is closed during the summer and the only 
one there is Flich. So what do we do about the dates on the library 
slip?

Here's my take:

The two "schoolbooks" are NOT original books from the Hogwarts 
library or Harry's bookbag. According to the information in the 
introductions, they are specially prepared to be seen and read by 
Muggles, using the originals as the source. That means that, among 
other things, the list of names and dates isn't from an actual 
library book but was added by Dumbledore for authenticity. He just 
chose names that he thought might be identifiable and put them on the 
list. His only goal in chosing dates was to make them run right up to 
the release date of the book.

Steve Vander Ark
The Harry Potter Lexicon
http://www.i2k.com/~svderark/lexicon