Do all the children understand what Ms. Moore is trying to teach?

I have always remained unsure about how much Sylvia learns because she refuses to admit to anything to Miss Moore.  She is angry, to be sure, and Miss Moore observes this of her, and she says "I"m mad, but I won't give her that satisfaction." And she later says about Miss Moore, who is teaching the kids about money and disparity, "But she ain't so smart cause I still got her four dollars from the taxi and she sure ain't gettin it." This does not seem to be a very productive lesson that she is learning from the situation.  She says at the end when she is racing down the street with her friend to spend the little money they have at Hascombs that "ain't nobody gonna beat me at nothin," which has some ambiguity concerning what she is going to do with what she has learned:  will this turn her into a productive citizen so that she makes more of her life (the point of the lesson, Miss Moore must hope) or will she act out resentment and anger in less productive ways such as by trying to trick people (as she does in being less than honest about Miss Moore's money). The girl has an attitude that is very much a product of the economic inequality, and that she will have to deal with if she wants to overcome that.