I would like to start by saying that by fanfiction standards this is reasonably good, and I did enjoy some of the explanations of magical phenomena. However, by general book standards (which is of course how I judge everything on goodreads) I did not enjoy this. 
 I felt much of the characterisation was off and so many things were just ridiculous from a canonical perspective ((view spoiler)[several Muggles entering Hogwarts grounds, and the teachers allowing a Muggle news crew to film a report of Hogwarts.... really??> (hide spoiler)] and everything about the house elves was wrong wrong wrong!) 
 What irritated me almost as much as the above was the sheer quantity of Americanisms that crept into British characters' speech. Of course in some books this would only be a minor issue, however I feel that British culture is fairly central to the atmosphere of the Harry Potter series, and in this novel in particular the author seems to attempt comparisons between British and American characters' speech on several occasions! I wouldn't expect a presumably American author to know exactly which phrases sound very American to a British ear (although this is what editors are for...) but some of the errors were very basic, e.g. a British character saying "pants" instead of "trousers". 
 I enjoyed small parts of this novel, but a substantial amount of the time I spent reading this was also spent wishing it was almost over. I would definitely not recommend this.