Kaichou Wa Maid Sama: 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.
Training, studying and even becoming the first female student council president of the school, Misaki has gained a reputation, among the male students body as an uptight boy-hating demon dictator and as a shining hope for the teachers and fellow female students. However, despite her tough-as-nails appearance, she secretly works part-time at a maid cafe in order to support her family. Unfortunately, her secret is soon revealed when the somewhat impassive Usui Takumi, a popular boy at school, nonchalantly discovers her in a maid uniform after school.
La Corda D'Oro: Hino goes to a school that specialises in music and has two streams: the normal stream and the music stream, where the music students are regarded as the more elite. She was running late for her class one day when she saw a tiny fairy, who seemed really excited that she could see it. The next day, the entrants in the music competition, who are decided by the school, are announced. Hino's name appears on the list - except she doesn't play an instrument. The fairy gives her a magical violin that can be played by anyone. Reluctantly, she enters into the competition and is forced to deal with the prejudices of her peers.
OHSHC: Haruhi is a poor tomboyish student at a school for the ultra-wealthy, able to attend because of a scholarship, and unable to even afford a uniform. One day, she stumbles across the decidedly peculiar but very popular Ouran Host Club. She tries to leave, but accidentally breaks a vase, and unable to pay for it, she's told that she'll have to stay and do odd jobs. That is, until they decide she would be more valuable as a club member. Not realizing she's female due to her appearance, they fix her up and give her a male uniform. She's an instant hit, so they decide to have her keep up the charade even after they find out the truth. Haruhi, being average almost to a fault, doesn't know what to make of the unconventional activities of the Host Club (or of the even more unconventional members), but having little choice, she plays along. Before long, real bonds are formed, friends made, and Haruhi finds herself accepted in a way she could never have been otherwise in this affluent school.
All these exists in both anime series and mangas. But honestly I recommend you to read the mangas instead of watching it. Mostly because you get to know more by reading the manga and the sotry doesn't end so quickly and bad.
Do you want to recommend any mangas/anime?
please do :3