I agree with the English lit comment. I know someone who went through that and she was able to pass classes without reading the books. In fact, the less she read, the better she did!
Cliff Notes (and Spark Notes) and the like are really spectacular at teaching you the kinds of things that literature teachers want to hear parroted back on tests. They aren't good at teaching you genuine understanding of literature, but that's not what's being tested for anyway.
I agree with the English lit comment. I know someone who went through that and she was able to pass classes without reading the books. In fact, the less she read, the better she did!