Computer based training?

[Part61]

I am building a web site for flight training. I want to offer lesson plans on my website which track a users progress. Basicly they will just be text articles but an instructor and user can track the progress of the student in some sort of system. I could just be threads in a forum but I need a way to direct students to the next lesson and a way to track if a user has read an article.
Does something like this exsist?
Jack (AKA Part61)