A few comments on the menu design:
1) The student name menu is not that discoverable. It would be nice if the three dots icon could appear without hover. I think a lot of users will have trouble finding these functions, since it is a new thing to have functions hidden under this column header.
2) The Gradebook menu name doesn't seem all that helpful, especially since these are view options and there is another menu called View. These menu names could use some rethinking.
3) It doesn't make sense to maintain the settings icon on the right, when there are several menus on the left and hover menus tied to the column headers. There are functions in too many places. It would make more sense to incorporate settings into the menus on the left.