Good morning pconkie
Does the group contain any users other than students? The easiest way to find out would be to use the Group's and Policies app. This will give you a list of all the users with in the group. My instinct is telling me there may be a "Staff" profiled user in that group, this could be causing some conflict but with out investigating it is hard to provide an answer.
Regarding the "3", this refers to what is ready for marking with-in that assignment. So if a student submits an activity this will be ready for marking and if a student completes (Hands-In) the assignment this will also be ready for marking. As you mark work the number will update to indicate what is outstanding.
Hope this helps and i look forward to your reply.
Samuel
