Suicide Trend in Palo Alto, California?

Recently, four students committed suicide in Palo Alto, CA, within six months of each other. All of them threw themselves in front of a commuter train.

Three attended the same high school. John Blackstone reports on the incidents and the communitys reaction. Some parents and students think depressed students (or those desperate for attention) see suicide as a way to get the attention they crave. The Annenberg Public Policy Center sent letters to the media to consider what they report before they do.

Name some risk factors related to suicide. How often do teenage suicides occur in clusters?