Most probably they'll post them somewhere so people elsewhere can have the benefit of what you have sitting in the classroom.

一般来说他们会把这些视频资料发到网上,这样世界各地的人们就能,和坐在教室里的你们一样从中获益

耶鲁公开课 - 基础物理课程节选

Also, people who come in early maybe should try to sit in the middle part of the classroom, so the latecomers can come in without too much disruption.

还有,来得早的人最好尽量,坐在教室中间的座位,这样就不必站起来给迟到的人让路

耶鲁公开课 - 基础物理课程节选