Is the chocolate sale significant? What is represented by the huge number of boxes of candy that the boys at Trinity must sell?

Despite the title of the novel and the chaos that ensues around them, the chocolates themselves are rather insignificant. They are simply chocolates but carry a heavy weight of symbolic importance. They come to symbolize rebellion, subjugation, conformity and non-conformity. Jerry's refusal to sell chocolates becomes an act tantamount to war. Jerry is really challenging the teen hierarchy and strict societal expectations of High School. The Vigils use the chocolates to control the social stratification of the school.