With ActiveNow you can easily check the subject of the class 2 weeks ago, as well as homework. To write down this kind of information you just have to set few things.
Configuration of custom fields for classes
To create custom fields for your classes go to Settings, General and in Custom fields settings section click on Additional event-related things.
In the opened window you can edit fields and choose who can see them.
How instructor can add subject of the class and homework?
You can add this information after clicking certain classes. You will find field in E-register at the end.
How client can check subject of the class or homework?
After logging in to client panel, participants can see subjects and homeworks in Upcoming classes section.
Participant can also check previous subjects and homeworks after clicking on Show all my classes.