Blue Bloods by Melissa de la Cruz
Melissa de la Cruz has a really interesting take on the origins of the vampires (blue bloods, as opposed to the human red bloods), but Blue Bloods (the first in a series) spends far too much time on the usual dramas of upper-crust New York teens before getting into the meatier part of its story.
The novel's protagonist is Schuyler Van Alen, a sophomore at the prestigious NYC prep school, whose influential family is down on its luck. An natural outsider, Schuyler is forced to involve herself with members of the school's most notorious clique when she learns that she is coming of age as a vampire just like many of the most popular kids at school. When teens begin to die under mysterious circumstance, Schuyler realizes that the vampire elders may be concealing something.
Blue Bloods is definitely not one of the best teen vampire books, but I am interested in seeing how the storyline will play out in the subsequent books.