If you're looking for something extra-ordinary check out genres other than "Vampire" or "high-school". Try out stuff like Parasyte, Tokyo Ghoul, or even Cowboy Bebop. Hell you could even watch one of the most overhyped shitty animes' such as One Piece/Naruto/Bleach and they aren't about high schools or vampires (even though I don't recommend any of those 3.)
Like @Takatsuki has said if you give any of us here a genre or list of anime you have liked we could go in depth with similar anime that we think you'd like.
If you watch parasyte or one of the others I've recommended try these and you may like these as well.