There is a strange issue I have encountered when trying to add comments and change grade of some questions on quizzes created in one of my Moodle 1.6 courses.
I have had no problem so far inserting comments for feedback to students in all the homework quizzes for a particular course, but last week I gave a midterm test that consisted of all questions selected at random from a number of questions distributed in categories of my question bank for the course. I did this in an effort to have different questions delivered to each student. The strange thing I found when looking at the submissions and trying to override grades to give partial o total credit and to leave comments to the students, was that the comment and/or new grade would not be written in the submission as it used to happen with the non-random question quizzes. I go in all cases through the process of saving the changes in another window, but the comments or overridden grade will not be shown. Curiously, the final grading for the test which appears at the top of the submission, will be modified according to the "saved" new grading I requested, but no change in the grading of the individual question is shown, and no comment appears.
As you imagine, the students are a little confused about what is going on, why the total grade does not match the point addition shown in the individual questions, and can not received the instructor's comments to guide them with the errors they made. I ended also quite frustrated after spending time writing comments that would never show. Again, this only seems to happen in quizzes that use random questions.
Has anyone experienced this? Is there something I am doing wrong in my ignorance? Any comment or guidance will be greatly appreciated. Thanks in advance.