Essays in class are very important. You will get 25 minutes per essay on the GoPo exam and four essays. Even if you don't do good on the multiple choice part, if you do great on the essays it can help you pass the AP exam. In class you must use good grammar on the essays or you will get points off. If you don't know the answer try your best and add fluff, it may help you get the points. You don't have to drag your answer out if you are sure it is correct put the answer and move on for time sake. Always redo essays when you get the chance, it can help your grade a lot when you fix bad grades.