Needs help

[Tairn McBeth]

many many years ago when i was a member of my high school Japanese club we were watching an eps of this and eps of that oh Japanese and Korean dramas and i have always to watch it but can find it... so heres what im looking for

A female teacher starts to teach a class that is just down right rude but an trys to make her life hell and everyone thinks shes some shy teacher but when a kid throws a baseball at her head while shes writing she catches it without looking and gets super creepy.. turns out shes the leader of the Mafia and just wanted to teach... so she does both..

and thats all i can remember from that one eps i saw back in like 2003 ... so if you have any ideas that would be great  

[Eowalenna]

Not sure if you are still looking for this title. Could it have been Japanese drama Gokusen (2002)? I have yet to see the drama (want to) but I have seen the anime and Gangster/Teacher thing is the basic plot.