The chocolate war, chapter 16-20

Throughout chapters 16-20, brother Leon and Caroni talk about Jerry refusing to sell any chocolates and in chapter 17 they tally up the totals of how much chocolates were sold so far. In chapters 18, Jerry and his father has an arguement about his mother and in chapter 19, Jerry still refuses to sell any chocolates because he wants to get in the vigils because maybe he wants to feel more accepted and in chapter 20, the students in trinity annoy Brother Jacques very much.