Ah, another Diana Wynne Jones fan!
Best book of hers (IMHO): Power of Three. About gifties, but in a different sense...
Witch Week and Charmed LIfe are wonderful, too.
I really like Anne McCaffery's books, though the main series is probably better for mid to late teens, there is some romantic love/mating referances.
But there is a trilogy for younger readers:
I'd ditto the first two, but I'm pretty sure there's a reasonably age-inappropriate sex scene in Dragondrums. But the first two should be ok. I fell in love with those books when I was in about the 6th grade but I would've been maybe 11 at the time.
I loved historical fantasy when I was in upper elementary, especially anything related to Greek mythology; alas, I couldn't name any specific titles anymore.
Maybe try: The Girl with the Silver Eyes.