In the first five minutes of the movie, a teacher is found hanging by a sash from the ceiling of her classroom. We see her through the classroom window on the opposite side of the room. We do not see her face. The scene is emotionally disturbing, but not graphic at all.
The rest of the movie deals with the children and adults handling the aftermath of her suicide.
A child draws a noose around a photo of the teacher who hung herself.
Two children get into a shoving match at school, with lots of name-calling.