Story & Info:
Azumanga Daioh (あずまんが大王) is a Japanese comedy manga by Kiyohiko Azuma. The story depicts the lives of a group of girls during their three years as high-school classmates.

Plot:
Azumanga Daioh chronicles the everyday life of six girls and two of their teachers in an unnamed Japanese high school; covering from tests, classes, culture festivals, athletic events, time spent traveling to and from school, group studying, summer vacations and the fictional theme park Magical Land, concluding with the graduation of the main cast. The story is generally realistic in tone, marked by occasional bursts of surrealism and absurdity.

Manga:
It was serialized in a shōnen manga magazine from 1999 to 2002 and collected in four bound volumes. In May 2009, in conjunction with the 10th anniversary of the manga, three additional chapters began serialization under the title Azumanga Daioh: Supplementary Lessons .

The manga is drawn in a series of vertical four-panel comic strips called yonkoma . The series has been praised for its humor driven by its eccentric characters, and Kiyohiko Azuma is acclaimed as a "master of the four-panel form" for both his art style and comic timing.

Anime:
It was adapted as an anime television series called Azumanga Daioh: the Animation by J.C.Staff.

Other media: Several soundtrack albums were released, as well as three Azumanga Daioh video games.

Source:Wikipedia