Adding multiple teachers to a single class

I would love to be able to add co-teachers to my courses. I have co-teachers in many of my courses for students to have additional support. It would be super helpful to have them have access to the assignments and student progress. 

The "workarounds" that are given are not great. I have teach multiple classes and have different co-teachers, I cannot share my account with another teacher without having them have access to students that are not theirs - slightly against FERPA. Having a student have multiple coaches, doesn't help the other teacher see their progress with assignments and what still needs to be completed.