From Decadence:

Mishima, a student at a school in the countryside, is bullied by his classmates. The reason is because he's seemingly gay. In reality, Mishima does like guys so he doesn't resist their bullying, and instead, finds solace in secretly cross-dressing. One day on the rooftop, Mishima finds the lipstick he'd lost before in the hands of Kirino, one of the bullies... and Kirino was about to put on the lipstick that Mishima used on his own lips. This is the story of young boys looking for a place they can really be themselves...

When Riko earned the nickname "Flower Garden's Iberico-chan" in junior high by her crush, she was devastated. Reunited again in high school, Riko has undergone a 180 degrees change. Will he be able to recognise her...?!

Cross Academy is attended by two groups of students: the Day Class and the Night Class. At twilight, when the students of the Day Class return to their dorm, they cross paths with the Night Class on their way to school. Yuki Cross and Zero Kiryu are the Guardians of the school, protecting the Day Class from the Academy's dark secret: the Night Class is full of vampires!

Nao wants to get closer to her deaf classmate, Tobe-san.

About Android school (all girl school?)
The students are the personification of Gadget/Device brands which use Android OS.
The School teacher is Google-Sensei
There also student (boys) from other school : Apple-Kun, RIM-Kun & Nokia-Kun

List of Cast and Character at ;
http://weekly.ascii.jp/elem/000/000/071/71299/

1.Adam Cupertino-Kun (Apple/Iphone)
2.Kyoto Seira-Chan (Kyocera)
3.Fuji Tooru-Chan (Fujitsu)
4.Matsushita Hana-Chan (Panasonic)
5.Kashio Nao-Chan (Casio)
6.Taoyuan Shiina-Chan (HTC)
7.Hayakawa Mirai-Chan (Sharp)
8.Shinagawa Sonia-Chan (Sony Mobile Communication)
9.Hoshino Una-Chan (Samsung)
10.Ei Shu Sue-Chan (Asus)
11.Motoki Laura-Chan (Motorolla)
12.Kinjo El-Chan (LG)
13.(Waifaa/Yuika) Yui Hana-Chan (Huawei)
14.Ho Ta (Panda) Sora-Chan (Pantech)
15.(Jong Shin/Hiiragi Sachi) Holly Miyuki-Chan (ZTE)
16.Kuroki Rimu-Kun (Blackberry RIM)
17.Hokuou Nokia-Kun (Nokia/Windows Phone)

Beside the above;
18.Google Sensei

Club (Japan Operator) :
19.D Club Coach (NTT Docomo)
20.A Club Coach (Au/KDDI)
21.S Club Coach (Softbank Mobile)
22.W Club Coach (Willcom)
23.E Club Coach (EMOBILE)

Official explanation in English, here => http://weekly.ascii.jp/elem/000/000/162/162166/

Naegi Komaru, Naegi Makoto's younger sister, managed to survive despite being outside Hope's Peak Academy. There she meets Fukawa Touko, a.k.a. Genocider Shou. This is the story of their struggle to survive in a world full of despair.

Yukino Miyazawa is the perfect model student. She's pretty, kind, good at sports, and is always at the top of her class; but she's not all that she seems. It's all an act of deception; she is really the self-confessed 'queen of vanity,' and her only goal in life is winning the praise and admiration of everyone around her.
When she enters high school, she finally meets her match: Soichiro Arima, a handsome, athletic, popular, and very intelligent young boy. Ever since he stole the top seat in the class from her, Yukino has hated him, and has been plotting on how to take back her former place as the object of all other students' admiration.
What she wasn't expecting, however, was that Soichiro, the very boy she hated, would confess his love for her; or that he would find out about her deception - and use it to blackmail her!
Together, they discover that they have more in common than they knew, and they slowly begin to bring out each other's inner selves.

Also included are the following short stories:
• The Tiger and the Chameleon - A Promise
for One Week (Vol. 1)
• Ashita Mata Mori de Aoune (Meet Me Again Tomorrow in the Forest; Vol. 4) -
Always an outcast because of her black hair the heroine of the story finds a strange man in the forest - a man from Earth - and he has black hair, too.

A manga about 3 girls in the flower arrangement club.

Chuunibyou girl Ayame-chan is enjoying a country life filled with nature with her simple and innocent friends! The delusions of Ayame-chan with regards to her friends, also explode! It seems she still haven't thrown 3D out of the window yet....

An anthology comic of Infinite Stratos by various mangaka.

From Elision-Scans:

One day, Unohana unexpectedly meets two brothers — and they both happen to be demons. Nobody can see them except for Unohana, a schoolgirl who can see what nobody else can see. But when she is attacked by the spirit of a black dog, even more strange forces are awoken.

Kosu x Kosu is a oneshot about Isumi Seiji, a high school art student who frequently coaxes female students into becoming his models, and Takamiya Ayase, the student council president who always reprimands him. After repeatedly refusing to become Seiji’s model, Ayase decides that the only way to stop him is to disband the art club. As she attempts to do so, however, she is cursed by a third party, and the only one who can free her from the curse is none other than Seiji.

Tomoyo Aki: an otaku, and Eriri Spencer Sawamura: a talented artist, are childhood friends, but lately they have grown apart. Will a chance encounter with Megumi Katou; a beautiful girl with a strange penchant for being 'anonymous' to the people around her, reignite the friendship they once shared when they join forces to create the best 'heroine' doujin ever? Or will Tomoyo be sucked in by his otaku passion to elevate Megumi into a 'noticeable' character while ignoring Eriri's own ideas and feelings in the process?

What kind of fetish do you have? A comedy about a collection of rascals and their embarrassing club activities!

Fujiwara is the school's most admired student and captain of the volleyball team, but her reputation is at risk when she accidentally breaks the principal's most prized possession, a priceless vase. Fellow student Miu witnesses the accident, and Fujiwara begs her not to tell. In exchange, she'll do whatever Miu wants. It turns out that what Miu wants is to date Fujimaru! Although this wasn't an arrangement that either girl expected, the two soon discover that breaking the vase may have been destiny's way of bringing them together.

1-2+extra) Narushima, an elite detective of the Metropolitan Police Department who is guarding an important person at football stadium happens to meet his old friend, Fujisaki. When they were promising football players in same team, Fujisaki always dominated Narushima and deprived all of Narushima including of his pride and girlfriend. But Narushima realizes that Fujisaki becomes a sniper. He failed to catch Fujisaki and Fujisaki also failed to kill the VIP. They meet again and make love together...

3) An ex-member of swimming club encourages a retired member by fatal injury to tell the ace swimmer his feeling. Ace swimmer accepts it because he loves injured butterflies...

4) A teacher tries to find out the reason why his student acts rebelliously only against him...

Jinah is a girl who’s always alone and has a depressed expression. Eunwoo feels uneasy about her behavior and is concerned that she’ll commit suicide so he constantly hovers around her. A risky story about teenagers’ emotions, a debut work drawn by Lame!

A collection of stories:

1. Hiragana Sen, Aiu Eki Yori (From Aiu Station on the Hiragana Line)
Asaki has her life all planned out: she is going to win a beauty contest, become a newscaster, and marry into wealth. One day she is helped by a delinquent-looking girl named Tsune on the train and her plans begin to change...

2. I'll Send Her Home on the Last Train
Sequel to Aiu Station.

3. Shoujo Planetarium (Girls' Planetarium)
Suzuki and Satou are classmates but barely interact due to their different personalities. One day Suzuki sees Satou getting picked up by an older woman and when noticed gets dragged along by her to Satou’s chagrin.
- Yuri Project

4. Isshun no Asterism (Ephemeral Asterism)

5. Eien ni Shoujo (Forever Girls)
A ghost named Mizuki returns to her old home to discover a family she does not know. There, she meets a child named Misao who is the only person who can see or interact with her. This is the story of their relationship as Misao grows up.

6. Otona no Kaidan no Shita (At the Bottom of the Stairway to Adulthood)
Natsu has never had a good relationship with her older sister, Aki, or her friends she always brings home. One day Aki brings home a girl that is quite a bit different than all the others and Natsu immediately likes her. When she overhears Aki and her friends talking about the new girl behind her back Natsu thinks, "If only she was my friend instead..."

7. Shoujo Seizu (Girls Star Map)

Volume 1:
Seto Atsushi, the student council president, is tired of spending his days in the student council where there’s nothing but boys, and decides to recruit new members, but on one condition: they must be girls! Then Ozawa Kanae, a former delinquent, shows up in the screening for the secretary position carrying a bamboo sword…?! This is a collection of five related oneshots with a specially drawn short extra, "Classified!! Student Council Report!!"

Content:
Ch.1 Seishun Trickers
Ch.2 Seishun Trickers ~Newspaper Club's Komatsu-san~
Ch.3 Clear Sky
Ch.4 Brandnew Days
Extra 4.5 Classified!! Student Council Report!!
—Freewheeling Scanlations

Volume 2:
Komatsu Akina is a passionate photographer for her school’s newspaper club. When Aoi-kun of the Student Council confesses to her, all of a sudden she has this huge decision to make. Since she has never dated before, Komatsu is confused as to whether or not she should date the extremely popular Aoi-kun, who is constantly surrounded by pretty girls.
—Dazzling Scans

Spin-off:
Sakashita-senpai no Koigokoro