Azumanga Daioh is fucking incredible. It's my all-time favorite series. I also recommend you check out the manga "Yotsuba &!" by the same artist. It's got the same kind of humor and wacky stuff happening, only instead of high school girls, the main character is a crazy little five year old foreign (we never find out from where) girl, going around town and doing stuff with her dad, dad's friends, and next-door neighbors. Yotsuba is pretty much Osaka and Tomo rolled into one, inside Chiyo's body.
Speaking of the artist, Kiyohiko Azuma, I had no idea that he did character designs/art for Tenchi Muyo, El Hazard, and Battle Athletes back in the day...
Kaorin has a girl-crush on Sasaki but no one really thinks Sasaki is mean so im not sure what youre talking about
It's pretty much just Chiyo that thinks Sasaki is kind of scary and gets into fights (bandages on her hands from the kami-neko biting her all the time) in the beginning.
I have a few students who resemble the Tomo character from this show.
Me too. Actually I have/have had students that pretty much represent just about every character on that show. I find that most girls also tend to have far more of a personality at this age than the boys do in this country.