As a Vampire Academy/Harry Potter fan, here are some YA books/series I recommend to you. :)
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Bloodlines by Richelle Mead
*The Golden Lily - releases June 19, 2012
Note: You might know about this already, but this is the spin-off series to Vampire Academy. Every VA fan is going to want to check this out. Sydney is the main character, and while she's not too much like Rose, she's still pretty badass in her own way.
The Demon Trapper's Daughter by Jana Oliver ♥
*Soul Thief
*Forgiven - releases February 28, 2012
Note: I love this series and I'm hoping there will be more after book 3. Riley is a totally kickass girl and Beck is an absolute hottie!! :D This is easily one of my favorite paranormal series.
The Hunger Games by Suzanne Collins ♥
*Catching Fire ♥
*Mockingjay
Note: Everyone should read this series. It is just that epic. One of my favorite series ever.
Poison Study by Maria V. Snyder ♥
*Magic Study ♥
*Fire Study
Note: One of my favorites. :) Yelena was such a strong heroine; she learns how to fight and use a bo staff. She definitely reminded me of Rose at times. And Valek... yum. :P
Shatter Me by Tahereh Mafi
Note: WOW!! This book is just awesome. Juliette seems sort of wimpy at first, but she becomes pretty kickass by the end of the book. And Adam... *sigh* This was one of my favorite reads this year. It's "supernatural" but in less of a creature-of-the-night kind of way. Still, I think you might enjoy this one!!
My Soul to Take by Rachel Vincent
*My Soul to Save
*My Soul to Keep
*My Soul to Steal
*If I Die
*Before I Wake - releases 2012
Note: Have read book 1. So far it's pretty good. :)
Glass Houses by Rachel Caine
*The Dead Girl's Dance
*Midnight Alley
*Feast of Fools
*Lord of Misrule
*Carpe Corpus
*Fade Out
*Kiss of Death
*Ghost Town
*Bite Club
*Last Breath
*Black Dawn - releases May 2012
Note: Never read this myself, but I keep hearing great things about it. :) Also, vampires.
Unearthly by Cynthia Hand
*Hallowed - releases January 24, 2012
Note: This was a cool book. I can't wait for the next one!!
Shade by Jeri Smith-Ready
*Shift
*Shine - releases May 1, 2012
Note: I've only read book 1 so far but omgosh. Two words. Zachary Moore. *swoon* Also, ghosts and mysteries... and Irish rock bands. :P
A Touch Mortal by Leah Clifford
*A Touch Morbid - releases February 28, 2012
Note: This is on my wishlist. I don't know a lot about it to be honest, but I think it has to do with angels.
Daughter of Smoke and Bone by Laini Taylor
Note: Also on my wishlist. I keep hearing really good things about this. Also has to do with angels... I think.
Here I've got a list of some paranormal/urban fantasy series I think might interest you. However, they are *adult* so there will be explicit content.
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The Black Dagger Brotherhood series by J.R. Ward
*Dark Lover
*Lover Eternal
*Lover Awakened ♥
*Lover Revealed
*Lover Unbound ♥
*Lover Enshrined
*Lover Avenged
*Lover Mine
*Lover Unleashed
*Lover Reborn - releases March 27, 2012
Note: This is such an epic romance/urban fantasy series. It's got sexy warrior vampires. What more could you ask for? lol
Covet by J.R. Ward
*Crave
*Envy ♥
*Rapture - TBA 2012
Note: This is the spin-off to the Black Dagger Brotherhood series. Covet took me forever to get through, but in the end I'm glad I stuck with it because I absolutely love Jim. DYING for the next book!!
Succubus Blues by Richelle Mead
*Succubus on Top
*Succubus Dreams
*Succubus Heat
*Succubus Shadows
*Succubus Revealed
Note: You mentioned you've read Vampire Academy so I thought you might want to check out Richelle's adult series if you hadn't already.
Halfway to the Grave by Jeaniene Frost ♥
*One Foot in the Grave
*At Grave's End
*Destined for an Early Grave
*This Side of the Grave
*One Grave at a Time
Note: Vampires. I just got into this series recently, and I wanted to include it even though I haven't finished all the books yet. I LOVE Bones. :P
Angel's Blood by Nalini Singh
*Archangel's Kiss
*Archangel's Consort
*Archangel's Blade
Note: I've only read book 1 so I don't know how the rest of the series is. My friends like it so maybe it gets really good.
Storm Born by Richelle Mead
*Thorn Queen ♥
*Iron Crowned
*Shadow Heir - releases December 27, 2011
Note: This is Richelle Mead's other adult series. Yeah, it's about faeries, but come on. A bondage loving fae king? Hot.
Darkfever by Karen Marie Moning
*Bloodfever
*Faefever
*Dreamfever
*Shadowfever
Note: More faeries. I liked this series up until the 3rd book. I had to put it down but my friend really loves it so you might too.
Blood Bound by Rachel Vincent
*Shadow Bound - releases June 1, 2012
Note: I have the first book but I haven't read it yet. My friend adored it though. She'll read anything by Rachel Vincent.