The best way to understand it is to take the test twice, once for each grade. This way, it will be easier to grade and understand because it will be a bit different.
Once you have finished the test, you should go to the home of the student who gave you the test and go over the graph, marking down all the questions you got wrong and then explaining what you marked. This way, you will be able to have a better understanding of what they are doing.
The second time you grade an AP Chemistry Exam, mark down any questions that were answered incorrectly. This is very important, because if they get the same question wrong twice, they are going to think the question was right.
This is what usually causes students to get an incorrect grade, and a final grade. This is why the AP test is graded a second time.
The third time, mark down only the questions that you got wrong last time. For each question, mark down the student’s name as well as the questions they answered wrong and give them a final grade.
The fourth time, you should only mark down the questions that you did correctly. You should get the questions right to save time and give yourself a better grade.
The fifth time, you should use both of the graphs to grade. You should mark off the graph that the student failed on and then mark off the graph that they got the question right on.
The sixth time, use a graph to mark off the questions that you got right and put the graph where the student got the question wrong. This will give you a good feeling for how much time you need to spend reviewing, and it will save you money in the long run.
You should go to each curve at least twice and review for each curve that you used to grade the test. This will help you out tremendously when it comes time to grade.
By knowing the curve and the grading scale, you will be able to go back and correct mistakes and increase your score. This is true in other subjects and skills as well.
In AP English or Math, you should know the grading scale and follow it completely. If you do this, then you will be able to get your grade to the required number and know exactly how to do it.