Research into Teenage Suicide

Suicide rates differ between boys and girls. Girls think about and attempt suicide about twice as often as boys, and tend to attempt suicide by overdosing on drugs or cutting themselves. Yet boys die by suicide about four times as often girls, perhaps because they tend to use more lethal methods, such as firearms, hanging, or jumping from heights.
Most teens interviewed after making a suicide attempt say that they did it because they were trying to escape from a situation that seemed impossible to deal with or to get relief from really bad thoughts or feelings. Like Ethan, they didn't want to die as much as they wanted to escape from what was going on. And at that particular moment dying seemed like the only way out.

Charlies Story Line:  
Charlie is the shy one in the group, he has been friends with Jack (the Leader) for years and this is why he has been accepted into the group. He is a respectable guy with amazing future prospects with him working hard at school and taking on responsibility such as being a prefect. Charlie doesn't like whats happening to his group and cant handle the pressures of it getting out of hand.

Links:
http://kidshealth.org/en/parents/suicide.html
https://en.wikipedia.org/wiki/Youth_suicide
http://youth.gov/youth-topics/youth-suicide-prevention/preventing-youth-suicide