The Girl Who Could Fly, by Victoria Forester.
The perfect companion to H.I.V.E., except a little less evil. This is one of my favorites!
When homeschooled farm girl Piper McCloud reveals her ability to fly, she is quickly taken to a secret government facility to be trained with other exceptional children, but she soon realizes that something is very wrong and begins working with brilliant and wealthy Conrad to escape.
A Series of Unfortunate Events: The Bad Beginning by Lemony Snicket.