Request #303 From Corina

It was a gift I got about 15 years ago or more. All I can remember is this; A story of a young person who had some type of power who was introduced to others like them. Possibly at a school as I remember there was an adult involved. I’ve searched and all I ever get recommended is ms Peregrines school for peculiar children but it was not this. This probably isn’t of much help but I remember I had the hardback edition and I’m pretty sure the dust cover was purple and black and mysterious looking.