After logging in, and accessing the classroom page, or FusionPage  that you would like to delete, in the upper right hand corner of the page is a "Edit Configuration" link.   On the bottom left side of the page is a "Miscellaneous Options" link, you can choose to archive a class, or delete a class.

Archived classrooms are only visible to the Website Administrator, or the FusionPage administrator, they are not visible to class members and the general public.

Your Archived classrooms do not appear on the FusionPage listing,  or the "My FusionPage" links of the individual members, and cannot be accessed by anyone who is not an administrator.

Archived Classes can be unarchived at any time.

If you delete a classroom, the classroom cannot be un-deleted. Please use this option with caution.