Parents need to know that mature teenagers, especially fans of the popular book by Robert Cormier, will appreciate this dark story, a kind of "Dangerous Liaisons" for teenagers. Archie says that "people are two things, greedy and cruel," and devises his plans to take advantage of those qualities.
Violence:Jerry beat up by a gang of smaller kids, boxing match at the end, blackmail, harassment, and other emotional violence.
Sex:References to masturbation, (false) accusation of homosexuality used to taunt Jerry.
The Chocolate War is a very interesting book, and so is the movie. Adolescents can relate to this kind of situation-- peer pressure. I prefer the book, it is VERY different from the movie and has way more detail.