Please☆Teacher!

Kusanagi Kei, a high-school student living with his aunt and uncle, has an encounter with a female alien. This alien is revealed to be a new teacher at his school. Later, he is forced to marry this alien to preserve her secrets. From there, various romantically-inclined problems crop up repeatedly. (Source: Anime News Network)

GTO: Great Teacher Onizuka

Onizuka is a reformed biker gang leader who has his sights set on an honorable new ambition: to become the world's greatest teacher... for the purpose of meeting sexy high school girls. Okay, so he's mostly reformed. However, strict administrators and a class of ruthless delinquents stand between Onizuka and his goal and they will use any means, however illegal or low, to drive the new teacher away. Perfect, because Onizuka's methods won't be found in any teaching manual; he cares about the difference between legal and illegal activities about as much as he cares for the age difference between himself and a high school girl. So get ready for math that doesn't add up, language you'd be slapped for using, and biology that would make a grown man blush... unless of course, you're the Great Teacher Onizuka. Note: Episode 1 has an airtime of 48 minutes.</i>

Otoboku: Maidens are Falling for Me

Mizuho can't believe his ears when Grandpa's will is read out. Grandpa's final wish is for Mizuho to attend the same academy as Mizuho's mother. The catch is it's an all-girls school. With the help of friend Mariya however, he gets a makeover good enough to fool everyone at the academy. (Source: Anime News Network)

Maria†Holic

It’s not easy to find the perfect girl, even when you’re the same sex! Kanako thought attending an all girls school would be the perfect way to meet the girl of her dreams, but after her hot new roommate turns out to be a guy in drag, and catching the eye of the most popular girl in school only brings down the wrath of all the OTHER similarly obsessed girls, she’s not so sure! Complicate things with a cat-eared dorm leader, her roommate’s rude-mannered maid and identical twin sister (who attends an all boys school, of course,) and WAY too many attractive girls of questionable persuasions and the question becomes whether Kanako can die from frustrated nosebleeds! (Life would be SO much easier if guys didn’t literally give her the hives!) Will Kanako ever find a non-polar opposite of a compatible non-opposing polarity? (Source: Sentai Filmworks)

We Without Wings – Under the Innocent Sky

Haneda Takashi has a secret he cannot speak of. To leave his dull school-life, he was supposed to have escaped to another world. However, he is reeled in by certain ties on his heart. One of these is Kobato, his awkward younger sister. The other is Watarai Asuka, his negligent girlfriend. Chitose Shuusuke is a poor freeloader. He passes his days working at various part-time jobs. One day, he has a disastrous first encounter with Tamaizumi Hiyoko. The next time they meet, Shuusuke discovers that they are fellow employees at his part-time job. Narita Hayato sees himself as a "hard-boiled" person. Back-breaking jobs are nothing to him. Hayato shuns normal human contact, but, during the nights, he would get together with delinquents and other denizens of the night. One such night, he meets the cheerful and oblivious Otori Naru. The relationships with these girls will greatly affect these 3 young men. But what, exactly, is the relationship these young men have with each other? (Source: AnimeNFO)

Asobi Asobase - workshop of fun -

Olivia is a blonde-haired beauty who was born and raised in Japan, but can’t speak any English. Despite always acting serious and as an intellectual, Kasumi is a bespectacled girl with short hair, who also can’t speak English. Finally, there’s the pig-tailed Hanako, who’s cheerful but can’t seem to become a normie. The three middle schoolers end up making a “Players’ Club”?! The ultimately cute, ultimately fun and hilarious teenage girls’ comedy is about to begin! (Source: Crunchyroll)