A gag 4-koma manga about a girl named Medaka who enrolls in a school that will let anyone in so long as they're literate. This included a talking dog and a talking cat, which shouldn't be surprising since the principal has a fish for a head. Crazy, funny stuff!

From Shoujo Manga Maniac:

Whenever she sees a boy of her type, Ai gets excited and reckless. Because of this animal instinct, she hasn't had a boyfriend for fifteen years. However, Daiki, who is handsomest among students, wants to date her. She thinks that if she missed this chance, no one would be waiting for her any more. Is it her last chance!?

Contains three stories.

From Ivyscan:

1) Chimi is impatiently awaiting spring and her 14th birthday. Not yet ready to give up her tomboy ways, Chimi has a lot of confusion to deal with when she feels the first stirrings of girlhood awakening inside her.

2)Secretive Shiki-chan

3)We'll Meet Again When It's Summertime

From Day of the River:

Sayo and Nao are childhood friends and neighbours, but Sayo has been in love with Nao for years. With Nao being a year older than her, Sayo finds it difficult to confess her love for him because she believes he only sees her as a little sister. But when Nao tells her he's moving away, it's now or never...!

Also contains the story Cosmic Wonder - Fate's Twin.

From Dragon Voice:
First of Jack & Elena series, where Jack meets Elena. The two are robots. They can live forever. Do they want to? Maybe yes, since they found each other.

From PRISMS:
It's a story of a love triangle composed of two sexless (but not completely genderless) androids and one human woman.

From Forbidden Garden:

CheSuBin is a sparkling high school girl with a height complex; this, however, has launched her into the modeling industry. There is just one problem... she has to pose as a male model! What kind of misfortune has fallen upon her? For a girl who's under a lot of stress, it just might prove to be fortunate. And her fellow student and CF Model, GanUnKyuk, just might trigger her love someday: "For you to see my true feelings~ would my pitiful self end up hurting?!"

From here.
Milk Crown is a story about a 15-year old girl named Tachibana Oto who leaves all her brothers and sisters at the orphanage to go work as a maid in a high school with a dorm (naturally, she will also be taking classes at this school, like everyone else). At this new high school dorm she's staying at, there are some pretty crazy people.

It's summer! And Nina (Lollipop) and Yoku (Milcute) both have a plan to spend their summer making memories with the ones they love. Nina drags Zero to the amusment park, while Yoku takes Miu. There they both tell their partners that they will enter the "Love Race" to win a great prize. What happens when Lollipop mets Milcute? And who kidnaped Forte (Lollipop) to force him to enter the race with her? Find out in this cute short chapter. -Oneshot side story from Modotte! Mamotte! Lollipop

After saving a beautiful girl from a bunch of weird looking thugs, Shibata Hideto receives the surprise of his life when she kissed him as gratitude!
But is she hiding a secret? And what is this group called The Imperial Boy Intelligence club?

Voice actor otaku Suzuna meets a boy with the ideal handsome voice, Tachibana Waku.
She wants to get friendly with him but Waku is acting cold...
"So heart melting you can't help but smile!" A younger tsundere boy and a girl obsessed with him scenes o’ plenty! Whispering sweet nothings, tin-can phones, handsome voices, loaded with moe situations! Settled firmly in the first position of comico novel category, continuously receiving good reviews and high praises from its readers. Now it’s time to raise the curtain on this youthful love started with a voice!

A collection of 4 stories:

1) Tempting Kiss
A smart girl tries to confess to the guy she likes, only to overhear him making fun of her. Years later she's given up on guys, but a hot bad boy wants to catch her eye.

2) Wet After School
Fujimori Shiho is a teacher with a troublesome student. Takeru Kagura needs supplementary lessons, but he has his own ideas about what "Shiho-chan" can teach him, and what he can teach her!

3) Making Feelings
Midori has been dating her boyfriend for two months, but sex still hurts! Talking to her girlfriends about it, she realizes the guy behind her is Asagi-san, her demon work supervisor and he heard the whole thing!

4) Jealousy (Scandalous)

From Divine Sanctuary:

Wakako has a secret crush for her 2-year-older childhood friend, Chii-nii, but he went away before she had a chance to tell him her feelings. Meeting him again after 3 years, will Wakako finally be able to pluck up her courage and say those 3 simple words?

A Scottish transfer student, Date has always dreamed of seeing faeries and living in a magical world. But due to her constant daydreaming, she fails to make any friends on her first week. However, when she gets hit on the head, she suddenly receives the 'sight' and can see a little pixie called Rabiko! So she starts off the year, and might even make a friend along the way!

From JShoujo Scans

Machiko should be floating on cloud nine. She's snagged the most popular guy in her grade and she's finally been able to form a close friendship with someone in her class for the first time in her life. But things aren't so simple---the other girls in the class are quick to accuse her of not being serious about her new boyfriend, and bad rumors are starting to spread around the school about her.

So when she meets Takaya, a rebellious teenager who's the same grade as her younger sister, she can't help but be drawn to him, and he seems equally attracted to her. Who will she choose?

Karasawa Makoto is the ordinary high school girl. One day, she receives a momento of her biological parents, and it apears to be some kind of divine sword that holds some magical beings inside it. And now, her life with the magical beings begins!

Sawatari Ai is an insatiably curious high school student. One day, she notices that a boy named Akizuki Tooru has joined her class, but according to her friends, he's always been around! He was a childhood friend of hers, so why doesn't Ai remember him? But the weird thing is...Ai's memory lapse isn't the only weird thing. She's about to be faced with hyper psychic action!

Note: Volume 2 only has one chapter that deals with the main story; the rest of the volume consists of unrelated oneshots.

Dusk Is Twittering (Tasogare wa Sasayaku) - Is a school story about a boy--who draws--that transfers to a new school for follow a girl he has a crush on. Unfortunately for him, she already has a boyfriend.

The Sound of Melting (Tokeru Koe) - Is school life story about a girl that dislikes her own voice due to being compared to her mother, who is a singer. Despite this, she loves to sing. So, there is a boy the sends her slips of a love letter after her voice lessons based on her voice.

Midsummer's Criminal (Natsu no Ran) - About an adult that tutors a 6th grader, who looks like an adult.

A collection of stories:

- Miss Prince
Koto started going out with Tatsumi just before entering high school. However, Koto starts feeling undeserving of her boyfriend when she discovers how smart and popular he is.

- Strawberry Kiss
Izumi hates Minato for stealing her first kiss, but she gets stuck working with him in a student committee.

- White Calendar
Middle school student Yukimi is friends with her neighbor Junya, who is the same age as her but year behind in school. How do they feel about each other?

From Shoujo Crusade:

Within this seemingly old and broken antique mirror, appeared an unbelievably hot guy!? This magic mirror named "Yi Luo"; transformed and appeared before Teng Yu, announcing that it can answer three questions coming from the mirror’s owner. However, the answer from the magic mirror seems to deviate from reality, worse still, the answers come with a price?

From CMX:

Matsuyuki Takeru could not have anticipated the decidedly different turn his life would take. After his mother's death, life continued at a reasonably normal pace — he studied hard for exams, played fantasy role-playing games, even fell in love.

But things began to change when he discovered a half-sister he didn't know about. A strange boy started appearing, claiming to be a warrior reborn who must fight an epic battle against forces of evil! When fantasy becomes reality, will every choice he makes affect the outcome?

Meet Toni and Mika---identical twins as different as day and night. Toni is a star athlete, outgoing, and popular. Mika is shy, quiet, and academic. Although they look like ordinary junior high school students, when they unite, these twins produce Miracle Powers. Telepathy, teleportation, and magic are all used to help these girls get through the day. Nobody knew about Toni and Mika's powers until a nosey classmate discovered their secret. Can the twins keep their powers a secret or will they be exposed to the world?