Maid Sama Vol 1

Maid-Sama! by Hiro Fujiwara. A Shojo manga rated Teen, published in English by Tokyopop.

Misaki Ayuzawa is the tough, no-nonsense student council president of a formerly all-boys high school. Nobody knows she secretly works at a maid cafe to support her family, until Takumi Usui, the most popular boy in school, discovers her secret.