You can now add yourself (teachers) as a student in any of your classes and then easily login as a student in that class.  I have gotten many requests for this and it is finally finished.

If you go to your class, then select Add A Student icon,  , you will see a new link called. "Click here to add yourself as a student » ".  If you click that, you will be automatically added to that class as a "student".

To go to that class as a student, you can click on My Training at the top of Toolbox PRO and select the class.