Dreaming about exams can be divided into two categories from the atmosphere of dreams. One is that the exam went well and you got high marks. One is that you panicked during the whole exam, forgot all the questions, couldn't answer them, or had an unexpected situation, which scared the daylights out of you.
One: The exam went well.
It is naturally a good dream to pass the exam smoothly. You are relaxed and happy during the whole examination process, which shows that you have been in a very good state of life and study recently, and you are comfortable doing everything. If you have to face an exam or evaluation recently, you are confident to get good grades.