Consideration must first be given to the availability of the Church.
Secondly, consideration and consultation must happen with the faculty committed to those classes for the third Saturday to teach the following Saturday.
Finally, adequate notice must be provided to ALL students.
Another option may be to postpone class at the given campus for one week having consulted with the pastor of the church and the faculty for that day, depending on location. Then rescheduling the class for one week later.
Still another option, should a campus need to cancel and endeavor to postpone by one week, but a single faculty be unavailable for the date another substitute faculty person may be called upon to teach the class one week later.