Hi Laurel:
Organized teachers have taken time and effort and systematically thought out how the class can be conducted, what preparation is needed, identifying resources and teaching aids, and assuring they are prepared with the covered material as well.
Smmoth classes rarely happen without preparation. The coordinbation preceding a well organized class is worth the effort in saved time, effective use of the instructor as resource, and time for unplanned questions, interruptions, or delays for whatever reason(technology can be a bummer).
Regards, Barry