From ShoujoMagic: In 12 months you'll be invited into the life of a group of students who discover with joy and sadness the meaning of "Love."
All Sonoko wants for Christmas is to spend it with her boyfriend. However, it seems that he can’t spare her a few minutes on Christmas, as she’s not his top priority. To make things worse, she’s starting to feel more and more drawn to Takatsuki, a classmate who once confessed his feelings to her…
Sagimiya Makage is new to an all girls school and doesn't feel like she will fit in. However, at the entrance ceremony someone even more weird than Makage introduces herself as an actual witch doctor who is employed to help with the school's curse.Shrugging it off, Makage later on makes a good friend at the dorms who won't wake up from the curse! How will Makage help her friend, and what is the secret behind this curse anyway?
From Miracle Manhwa: Jung Dan Bi accidentally collides into Top Model Jung Ee Dun, plastering a piece of her toast onto his shirt. Not having enough time to even take the blame she ran off telling him to...
From Sugar Oasis: Nobushina Naharu has always wanted to become a famous detective. Her dream is to set up a "Detective club" at school, but the teacher requested that a club has to have at least four or more club members to be considered a club. So then, when she has finally gathered 3 other partners, she realizes that they are getting weirder and weirder one by one.
Momoko is a girl who was born into a witch family in which most of its female members possess magics. Yet they can only reveal their magical capability to "the one" i.e. their soul mate / spouse. The more magic she uses in front of strangers, the more parts of her body would become cat-ish (such as cat ears and whiskers), and if any stranger learns her true identity she would turn into a cat completely--like her mother! Having joined the magic club in her school, Momoko has used her ability too often that her cat ears pop out every once in a while so she must find "the one" as soon as possible, but her candidates have already become suspicious...
Aet of 4-panel strips about the library committee of an all-girls school.
From Sugar Oasis: Kou and Yukako have been friends since elementary school but over the years Kou has fallen in love with his childhood friend and when he found out that she was moving as a result of her family mounting debts he was devastated at the prospect of losing his best friend and the woman he loved. That was back in junior high. A few years after their separation, Kou and Yukako meet again. Kou is happy to see her after so many years apart but at the same time shocked at how frail and thin she has become. The strong genki little girl he knew was gone and in her place stood a half-starved homeless girl forced to steal to eat.
This manga is quite old--it's from 1957. It centers around three members of the table tennis club at an all-girl school. Though it may not quite be yuri, it's a precursor to current yuri manga.
From Delish Scans: You may not like me, but I love your food.
Enthusiastic fujoshi and doujinshi artist Yurina sees yuri everywhere at her all-girls' school... except in the eyes of the best friend who cares for her.