Not necessarily. Some courses last for a week or two, that is, only once every two weeks.

Some courses are continuous, and classes are suspended after the first week.

Some courses start in the first week and rest before.

Moreover, the first few weeks are theoretical classes and the last few weeks are practical operation classes.

Or a week, theoretically a week.

It depends on the timetable. It will be written clearly. Be sure to remember the week of each class.