Science Test

I'm thinking that my Earth Science class is going to blow my GPA this semester. You'd think it would be pretty simple, but since the instructor truly believes himself when he says, "obviously I can't teach you everything you need to know for the test. You are responsible for the reading." So basically I should have just taken it as an online course since his only grading means at the moment are the standardized tests that come with the book, and heaven forbid he actually teach the stuff that is on the test along with the other non-test, non-related to the subject items he does discuss because he has more interest in teaching us Chemistry than he does Earth Science. He also said he recieved no guidelines as to what he needs to teach this semester, so he is trying to do as much as possible and basically it's 1.5 lecture classes over the entire 60 page chapter then a test that he "obviously can't" prepare us for. Grr...