The School for Good and Evil Series by Soman Chainani

Summary: 

The School for Good and Evil series by Soman Chainani is a fantasy adventure that follows two best friends, Sophie and Agatha, who are unexpectedly placed in the wrong schools—Sophie, who dreams of being a princess, ends up in the School for Evil, while Agatha, who embraces darkness, is sent to the School for Good. The series explores themes of friendship, identity, and the nature of good and evil.

The School for Good and Evil (2013)
Sophie and Agatha are taken to a magical school where heroes and villains are trained, but their placement challenges their perceptions of themselves and their destinies.

A World Without Princes (2014)
The schools are divided by gender instead of good and evil, sparking chaos as Sophie and Agatha try to restore balance.

The Last Ever After (2015)
Sophie and Agatha must face their ultimate battle as the line between heroes and villains blurs, and the fate of their world hangs in the balance.

Quests for Glory (2017)
The graduates of the School for Good and Evil embark on quests to fulfill their fairy tale destinies, but unforeseen dangers arise.

A Crystal of Time (2019)
Sophie and Agatha face betrayal and must uncover the truth about a new king's rise to power to save their world.

One True King (2020)
The final showdown between good and evil unfolds as Sophie and Agatha fight for the fate of the Endless Woods and their own friendship.