I have specific students that I need to provide modified assignments for. Is there an easy way to create a group to easily assign this work instead of selecting individual students, duplicating, and then assigning to the other students. I have 90+ students in on class (with multiple class days) and I don't want to spend all my time selecting students. 

I would be amazing if we could create secret groups or sections within a class, but I still need it to sync with other systems within my district.