Dreaming of cleaning the classroom means that it is easy to have temporary work/study inserts. It's best to arrange your schedule relatively comfortably these two days, and you won't be too flustered in case of emergency. Finding a partner who can help you in an emergency is also a good preventive measure!
Dreaming of cleaning the classroom means a day's hard work. You will feel this more deeply if you have less social experience. The shortcoming of not being tactful in dealing with people will trouble you in these two days. However, you will also benefit a lot from this process. Therefore, no matter what happens during the day, reflection at night is the most important thing!