Is these an easy and efficient way of combing my 3 individual classes into 1 master class so I can track data and student progress in one location?

During this time of remote learning, some of the in person classroom strategies I have used need to be tweaked. All of my students have been using Khan Academy.  I have organized them in separate classes because I can track student progress in real time during the traditional in person classroom setting. Now, I would like to keep these individual classes but also create a master class containing all students. This way I can track student progress and make sure that everyone is actively engaged in the daily google classroom assignments that are specific Khan assignments (assigned in google classroom as well as Khan for tracking purposes) and/or "time on task" Khan assignments i.e. mappers. In doing so, I will better be able to track students and reach out to home for students who are doing well, having difficulty, and/or not doing the assignments. 

My concern is that I have varying educational support needs in my classes. Is there a way, I can internally do this on my own without creating confusion for my students? Can I just sync my google classroom master class and invite them to a new join another class?

Any help or suggestions would be greatly appreciated.

Thank you for what you do!  Khan is a great program.

Andrew