I want suggestion regarding architecture/technology for following scenario :
I have to develop an application in which one side there will be a Instructor and one side student.
Consider, Instructor's page will have some buttons, when instructor will click first button some content related to first button will get loaded on student page from centralized database.
Similarly when instructor will click second button some data related to second button will get loaded on student page from database.
So, i need suggestion/samples/links regarding technology to make it possible with ease/fast/reliable
maybe i need dual communication using wcf and etc.....