Kaichou wa Maid-sama Manga

From Tokyopop: Brilliant and overachieving, Misaki Ayuzawa is the President of the Student Council at Seika High School, formerly a boys' school. Unfortunately, most of the students are still male and stuck in their slovenly habits, so man-hating Misaki really socks it to 'em in an attempt to make the school presentable to attract more female students. But what will she do when the sexiest boy in school finds out that after school, Misaki works in a maid cafe.