[Megara]

Okay, so, several years ago.. I'm gonna say 2004-2005 I rented a movie from Hollywood Movies. It was in the foreign section. I'm going to say it was Asian (I'm pretty sure about this)
It's about a girl who moves to a new school and she's very mysterious..
Weird stuff starts to happen, like something is following her.. then they all get locked in the school..
I remember one scene where the students get trapped in a room and you hear screaming and then blood splatters all over the window...

I wish I could remember more.. but I can't.. I have searched all over the internet.. every phrase I can possibly think of.. and I get nothing lol...

Thanks!