Read manga: Kaichou Wa Maid-sama!

manga
Summary:

Once an all boys school, Seika High, a renowned school full of reckless and filthy students, has recently become a co-ed school. However, with the female population still remaining a minority even after the change over the recent years, Ayuzawa Misaki takes it into her own hands to reform the school and allow a chance for the girls to feel safer in the rough environment.