This paper demonstrates that students in a school from where two suicides had occurred were more likely to know about the suicides, but also more likely to be depressed and suicidal compared with students from two comparison schools of similar social background.
Download here: *Adolescent Suicide 1 The effect on adolescents of the completed suicide of another student
Martin, G., Kuller, N. & Hazell, P., 1992. Adolescent Suicide 1: The effect on adolescents of the completed suicide of another student. Youth Studies Australia, 11, 1:21-23.