Is there a way, or can a query builder formula be added to go back and check up on attendance records that did not get completed.
This is a great idea. Things are busy with v11 for now, but I have put this in as feature 15 in the v12 todo list:
This means you would have it in time for the start of the next academic year. If I can do it is as a query, it might be sooner.
This has been implemented in v12, and can be seen in the dev branch at the commit below:
This IS compatible with v11, but DON’T copy the function.php file in that commit (as it is not backwards compatible). Just copy the two files changed in /modules/Attendance.