1. The intervention: The SOS program was presented to students in 2 consecutive classes over a 2 day period, typically in health or social studies classes. The SOS program's teaching materials include a video and a discussion guide. The video includes dramatizations depicting the signs of suicidality and depression, recommended ways to react to someone who is depressed and suicidal, as well as interviews with real people whose lives have been touched by suicide. Students are also asked to complete the Brief Screen for Adolescent Depression (BSAD), a brief screening instrument for depression that is derived from the Diagnostic Interview Schedule for Children IV (Lucas et al., 2001).