Make sure you read the textbook's assigned chapters and review the in-class notes before a test. Many times exam questions will consist of questions at the back of the chapter in the textbook. Don't forget that there are online study guides of each chapter, reading through those are at least 10x faster than the textbook and they only contain key information. There are also online transcripts for the Weber in-class quizzes. Most test material is not reviewed in class. Occasionally, there is a "show up" bonus for students who decide not to skip a test or quiz. Last of all, happy learning AP EUROers!
