Does the fast-forward teacher know anything about architectural cloud classroom?

Fast forward to the architecture cloud class. The teacher knows. Teachers can see which students attend classes on time and which students watch the replay, and at the same time, they can also see the watching time of each student. The progress bar in the cloud class can't be found. In fact, this is also the disadvantage of online courses. Students are young and have poor self-control. Students who don't like learning will pull a progress bar. In this way, the teacher only knows that the students have studied, but there is no way to know whether the students have studied Takuwa's specific learning situation.