Akata Witch by Nnedi Okorafor
Sunny Nwazue lives in Nigeria, but she was born in New York City. Her features are West African, but she's albino. She's a terrific athlete, but can't go out into the sun to play soccer. There seems to be no place where she fits in. And then she discovers something amazing—she is a "free agent" with latent magical power. And she has a lot of catching up to do.
Soon she's part of a quartet of magic students, studying the visible and invisible, learning to change reality. But as she’s finding her footing, Sunny and her friends are asked by the magical authorities to help track down a career criminal who knows magic, too. Will their training be enough to help them combat a threat whose powers greatly outnumber theirs?