Tracking commitment of instructors

Hi there,

with coursepresspro - i have uploaded over 20 courses on my site.
Now I plan to:
1. tie up with management school professors from different cities / colleges.
2. who will ask their students (100 to 250) per class to subscribe to the site.
3. direct them every week to the learning content for the course.
4. they get paid two fees:
a. a fixed fee for adding no of subscribers.
b. a sharing of adsense revenues based on site usage by students of the respective professors.
how do i track this usage on the site by students of different professors across multiple cities who would be doing the same course

My objective is to a. increase subscription. b. increase usage of the site.

pl assist.