Personally my largest problem with AP tests is the reliance on multiple choice. Even though there is a free response section, half of the score still comes from multiple choice questions. For most subjects I'd say that the free responses are by far a more accurate gauge of subject knowledge. It is much harder to fake your way out of a free response question with various test taking and guessing strategies. Additionally, not only is it easy to guess your way out of multiple choice questions you may not know, but it is also much easier to make simple mistake... (read more)
Personally my largest problem with AP tests is the reliance on multiple choice. Even though there is a free response section, half of the score still comes from multiple choice questions. For most subjects I'd say that the free responses are by far a more accurate gauge of subject knowledge. It is much harder to fake your way out of a free response question with various test taking and guessing strategies. Additionally, not only is it easy to guess your way out of multiple choice questions you may not know, but it is also much easier to make simple mistake... (read more)