The Seventh Secret - A Beth-Hill Novel: Jacob Lane, #4

Jacob Lane is a ten-year-old girl who's spent her life unaware of her magical heritage. After being sent to Darkbrook, a school of magic, supernatural mysteries seem to spring to life all around her and her new friends. After a picture of Niklas, the dragons' liaison to the only school of magic in the United States, shows up in too many newspapers to count, Darkbrook is forced to go on the defensive.
The secret of Darkbrook's existence has been discovered. But there are more than dragonhunters in the forest, and, as Jacob Lane, supernatural sleuth and student at Darkbrook, learns how to use her newly discovered talent of healing, she helps to right an old wrong and must battle a teenaged wizard intent on proving--once and for all--that magic is real.