The AP Exam Versus the AP Class：是什么关系?

　　There are two factors to consider when deciding how hard an AP subject is: the difficulty of the AP exam itself, and how the AP class is taught at your high school. Your score on the exam will affect whether you can get college credit for the class. Your grade in the class will affect your GPA and overall transcript impressiveness.

　　AP Biology could be a very tough course at one high school but an easy A at another, depending on the teacher and curriculum.

　　Note that a lot of AP classes self-select for motivated students or students with experience in a subject—especially the ones with ridiculously high pass rates, such as Chinese, Physics, and Spanish. Even though these exams have high pass rates, they're are often viewed as some of the hardest AP classes to pass.

　　Also, notice that exams with some of the lowest passing rates, such as Environmental Science and Human Geography, are ones many students say are the easiest. These exams have lower passing rates because younger high school students who are less prepared for AP tests often take these classes. In addition, many students simply underestimate them and don't study enough. As a result, these exams can be easier to pass, but you have to be prepared to study and not expect to pass without some hard work.