Is there some greasemonkey script for finding out when somebody dropped a college class that you want?

My university’s online class registration system shows you how many people are enrolled in a particular class. If it is full, you cannot register for it. I know that Facebook has a script that lets you know when someone removes you from your friends. Well, could you also use the same thing to find out [...]

I dropped the wrong class on the website registration how do i go about getting back into the class?

so this what happened i signed up for class the thing is i dropped the wrong one. i can not re add because the add period passed.