Hi, I just want to ask about class overview

I checked the program before I start, and found this class overview. What is this?

Hi! When you enter the admin interface and choose any class the default view will now be a class overview screen instead of the student’s screen. The Class Overview will display how many students, teachers, and active curriculum there are for each individual class. It will update in real-time as students, teachers, and assignments are added and removed.