Rec Japanese manga 'Gokusen'.
About 'Gokusen'.
It very popular japanese manga, already made to drama. I like two version of it.
for summary, I'd copy from 'shinkumi web'(http://animejb.net/shinkumi/)
written by - Calophi
"Yamaguchi Kumiko, age 23 and fresh out of college, obtains her first teaching position as a math teacher in Shiroken High School. The school itself has a pretty bad reputation, and to make it worse, Kumiko gets saddled with the most ill-mannered students in the school - class 2-D (3-D in the drama). Slowly, she earns their respect as she helps them with their problems and proves that she really cares for them time and time again. However, Kumiko is harboring a secret: she is from a yakuza (Japanese mafia) family and is heiress to the Ooedo Clan. If anyone were to find out, her dream of being a teacher would be over!"
It's not yaoi or slash manga.
haha that mean it must very interesting enought to make me addict to this manga. I crazy about it and want to distribute my love for it to others too.
If someone interesting, The link below will lead you to manga download page.(all translated in english).
http://animejb.net/shinkumi/multimedia/manga/