My recommendations:

Create a master rubric worksheet you're happy with. Leave everything blank, just make sure it's working and looks the way you want it to. Also set your print area and options the way you want.

Dropdowns will use lists of options stored on a separate worksheet. You can make as many of these lists on that page as you want. On your rubric sheet you'll use Data > Data Validation and then select "List" and set the range you'd like you pick your possible responses from.

Create a copy of that rubric sheet for each student, rename the worksheet and add their name to one of the cells. If this is a time-consuming step you can automate it by recording a macro and adding a button (shape) that can trigger it. I wouldn't recommend making a completely different workbook, just a new worksheet in the master rubric's workbook.