Who are the super suicide society of summer session in A Separate Peace?

In John Knowles' novel "A Separate Peace," the "Super Suicide Society of Summer Session" is a group formed by the protagonist, Gene Forrester, and his friend Phineas (Finny) during their summer at Devon School. The society is created as a way to bond and engage in daring activities, reflecting the boys' desire for excitement and a break from the routine of school life. The group's central activity involves jumping off a tree into a river, symbolizing their exploration of friendship, risk, and the transition from adolescence to adulthood. Ultimately, the society serves as a backdrop for the themes of innocence and the loss thereof.