The timeline on the DVD *confirms* canon;

[hp_lexicon]

No: HPFGUIDX 55945

--- In HPforGrownups at yahoogroups.com, "serenadust" <jmmears at c...> 
wrote:
> Secondly, all the available canon implies that Hermione is the 
> product of an English school and an English family. Not Scottish, 
> certainly not American, and not Portugese as some posters seem to 
> have suggested.  As Ali confirmed in her post ::waves to Ali::  
it's 
> overwhelmingly standard in that system for the age cut-off to be 
> September 1 with virtually *no* exceptions.  

Some of you might be interested in an essay which was just added to 
the Lexicon by Diana Summers entitled "British Schooling in the 
1970s" in which the author briefly discusses this point. It's 
located here:

http://www.i2k.com/~svderark/lexicon/essay-british-schooling.html

No, this won't convince anyone of anything, but it does speak the 
to "no exceptions" claims which have been brought up. 

Another point to consider is that, as far as Hogwarts goes, Muggle 
schooling is apparently irrelevent, based on Rowling's comments in 
an interview.

Steve