Scout absolutely hates the way her school is. She hates the way the teachers teach. In general, she thinks that they do not let her have enough challening material. Instead, they want her to do the same sorts of rote learning drills that everyone else in the class does. Because of this, she hates school -- both first and second grade.
In Chapter 2, for example, she hates the "Dewey Decimal System" of education where the teacher holds up cards and the kids are just supposed to look at them.
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Nice summary. (is this where we comment?)