The reason why no classes, gradebook or attendance can be clicked to view or set up is due to no marking columns being viewable/editable.

Resolution:
1. Login to FAWeb as a Supervisor
2. Setup-->Edit Marking Column Access
3. Make any of the marking columns viewable by changing the NO to YES
4. Setup-->Server Configuration-->Clear Server Cache
5. Now login as a teacher
6. See that now classes, gradebook and attendance can all be clicked and viewed