In summary, Vampire Knight is the anime offspring of Ouran High School Host Club meets Twilight. I didn't have high hopes for this anime and was pleasantly surprised at the strength of character development and some plot twists.
Cross Academy is like 2 schools rolled into one. The normal day class students are all intrigued and have terrific crushes on members of the Night Class who look like Movie Stars. Of course they day class is completely unaware that the Night Class are vampires, and an uneasy peace is kept by 2 prefects (Yuki and Zero), obeying the Headmaster's ideals of "let's all just get along".
The night class looks like Ouran High School Host Club come to life. Every one of the men is handsome *sigh*, with the handsomest being Clan Kaname, the Pureblood Noble. He saved Yuki when she was a child, but Yuki's fellow prefect Zero hates him because he is a vampire.
Therein is the crux of the love triangle! The plot twisted and turned enough to keep me interested. There was a lot of angst, staring and brooding. Parts of it were downright sexy. Even I who hate the sight of blood found myself intensely interested in some of the ... food scenes.
Art was same as Ouran style, sound was just ok. Although the OP was very well done the rest of the soundtrack was very nondescript.
The ending was a little unexpected (a cop out) or I would have scored it higher. However thanks to 1 scene of fanservice for females the overall score ended up as an 7. At the end of it, the series didn't feel complete hence the 7 overall score. Good premise, lots of promise, could have been better executed. At the very least though, it was good enough to make me want to watch the sequel (just to find out what happens).