Will students appear on the ck-12 rosters after doing an assignment in Canvas?

[cmwarren]

I see some students on the rosters but not all of them. 

[Chris_Hofer]

Hello @cmwarren ...

I'm not too sure that we'll be able to help answer this question here in the Community.  I believe that ck-12 is a third-party LTI external app that integrates with Canvas.  I am basing this on the following website from the EduAppCenter: ck-12.  Since ck-12 is technically a third-party product that integrates with Canvas, I would recommend that you reach out directly to the tech support folks at ck-12, and they should be able to help you with your question.  Good luck!