It’s a book from the S.G.E trilogy about two girls who are best friends. One is outgoing and likes pink, while the other is rather lonely and likes the color black.
Every four years, two students are kidnapped to go to the legendary School For Good And Evil, where they train to become princesses, witches, warlocks, princes, and sorcerers. The students then graduate and leave into the endless woods to try and become part of a fairy tale.
When the two friends, Sophie and Agatha, are kidnapped and taken to the school, they find out who they really are, and their roles are reversed. Agatha in Good, and Sophie in Evil.