Among all my courses on my moodle site, there is one which has 8 students and about 50 sets of grades.
I am administrator of the site.
In this course I can view the results of all students in the Gradebook under the Grader Report.
However, if I choose from the dropdown box the option to view the 'User Report', then no students are available in the dropdownlist. I can choose no-one as they aren't available in the dropdown box.
My mentor's cant view the user reports of their students either.
All my other courses seem to work normally.