by Yezi Yang.
In addition, if the teacher turns on "marking workflow" in "grade" section in assignment setting, the assignment does not send email notification to students until the workflow is changed to "released".
In many cases, teachers mark student submissions one by one online. Currently, the students are notified one by one, which makes a lot of confusions to other students who do not get the marks. It should be a basic function to allow teacher control the notifications and notify all students together.